diff --git a/sfusi/acronym.cpp b/sfusi/acronym.cpp
new file mode 100644
index 0000000..573967d
--- /dev/null
+++ b/sfusi/acronym.cpp
@@ -0,0 +1,35 @@
+/*
+Nome: Mario
+Cognome: Montanari
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *acronym(char *const str);
+
+int main(void) {
+	char str[SIZE] = "Organizzazione nazioni unite";
+	
+	cout << str << endl;
+	cout << acronym(str) << endl;
+	
+	return 0;
+}
+
+char *acronym(char *const str) {
+	int w = 0;
+	for (int i = 0; str[i] != '\0'; i++) {
+		if (isalpha(str[i]) && (i == 0 || isspace(str[i - 1]))) {
+			str[w] = toupper(str[i]);
+			w++;
+		}
+	}
+	str[w] = '\0';
+	
+	return str;
+}
\ No newline at end of file
diff --git a/sfusi/alfabeto_carbonaro.cpp b/sfusi/alfabeto_carbonaro.cpp
new file mode 100644
index 0000000..6400e7d
--- /dev/null
+++ b/sfusi/alfabeto_carbonaro.cpp
@@ -0,0 +1,43 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Convertire una stringa in alfabeto carbonaro.
+*/
+
+#include <iostream>
+#include <cctype>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+void alfCarbonaro(char mssg[], const char alfCarb[]);
+
+int main(void) {
+	const char alfCarb[] = "OPGTIVCHE  RNMABQLZDUF   S";
+	char mssg[SIZE];     // ABCDEFGHI  LMNOPQRSTUV   Z
+	
+	cout << "Inserisci una parola: ";
+	cin >> mssg;
+	
+	alfCarbonaro(mssg, alfCarb);
+	
+	return 0;
+}
+
+void alfCarbonaro(char mssg[], const char alfCarb[]) {
+	int r;
+	for (int i = 0; mssg[i] != '\0'; i++) {
+		r = toupper(mssg[i]) - 'A';
+		mssg[i] = alfCarb[r];
+		
+		if (alfCarb[r] == ' ') {
+			cout << "Parola non valida!" << endl;
+			return;
+		}
+	}
+	
+	cout << mssg;
+}
\ No newline at end of file
diff --git a/sfusi/camelCase.cpp b/sfusi/camelCase.cpp
new file mode 100644
index 0000000..6dd5d42
--- /dev/null
+++ b/sfusi/camelCase.cpp
@@ -0,0 +1,49 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+camelCase
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *camelCase(char *const str);
+
+int main(void) {
+	char str[SIZE];
+	
+	cout << "Inserisci una frase: ";
+	cin.getline(str, SIZE);
+	
+	camelCase(str);
+	
+	cout << "Frase aggiornata: " << str << endl;
+	
+	return 0;
+}
+
+char *camelCase(char *const str) {
+	if (str[0] == '\0') {
+		return str;
+	}
+	
+	str[0] = toupper(str[0]);
+	
+	
+	int i = 1;
+	while (str[i] != '\0') {
+		if (isalpha(str[i]) && isblank(str[i - 1])) {
+			str[i] = toupper(str[i]);
+		} else {
+			str[i] = tolower(str[i]);
+		}
+		i++;
+	}
+	
+	return str;
+}
\ No newline at end of file
diff --git a/sfusi/contaParole.cpp b/sfusi/contaParole.cpp
new file mode 100644
index 0000000..c974088
--- /dev/null
+++ b/sfusi/contaParole.cpp
@@ -0,0 +1,40 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+contaParole
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+void contaParole(const char *str);
+
+int main(void) {
+	char str[SIZE];
+	
+	cout << "Inserisci una frase: ";
+	cin.getline(str, SIZE);
+	
+	contaParole(str);
+	
+	return 0;
+}
+
+void contaParole(const char *str) {
+	int count = 0;
+	char oldChr = ' ';
+	
+	for (int i = 0; str[i] != '\0'; i++) {
+		if (isspace(oldChr) && !isspace(str[i])) {
+			count++;
+		}
+		oldChr = str[i];
+	}
+	
+	cout << count;
+}
\ No newline at end of file
diff --git a/sfusi/delDigit.cpp b/sfusi/delDigit.cpp
new file mode 100644
index 0000000..50a6025
--- /dev/null
+++ b/sfusi/delDigit.cpp
@@ -0,0 +1,41 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+delDigit (come removeDigit)
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *delDigit(char *const str);
+
+int main(void) {
+	char str[SIZE] = "H3ll0 W0rld! 2025";
+	
+	cout << "Before: " << str << endl;
+	
+	delDigit(str);
+	
+	cout << "After: " << str << endl;
+	
+	return 0;
+}
+
+char *delDigit(char *const str) {
+	char *dst = str;
+	
+	for (char *src = str; *src != '\0'; src++) {
+		if (!isdigit(*src)) {
+			*dst++ = *src;
+		}
+	}
+	
+	*dst = '\0';
+	
+	return str;
+}
\ No newline at end of file
diff --git a/sfusi/delEvenDigits_delOddDigits.cpp b/sfusi/delEvenDigits_delOddDigits.cpp
new file mode 100644
index 0000000..4cf2897
--- /dev/null
+++ b/sfusi/delEvenDigits_delOddDigits.cpp
@@ -0,0 +1,89 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+delEvenDigits & delOddDigits
+*/
+
+#include <iostream>
+#include <cctype>
+#include <iomanip>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *delEvenDigits(char *const src);
+char *delOddDigits(char *const dst);
+
+int main(void) {
+	char src[SIZE] = "25dic2018";
+	char dst[SIZE];
+	
+	strcpy(dst, src);
+	
+	cout << "Original string: " << setw(10) << src << endl;
+	
+	delEvenDigits(src);
+	cout << "delEvenDigit: " << setw(9) << src << endl;
+	
+	delOddDigits(dst);
+	cout << "delOddDigit: " << setw(12) << dst << endl;
+	
+	return 0;
+}
+
+// Con puntatori
+char *delEvenDigits(char *const src) {
+	char *w = src;
+	for (char *r = src; *r != '\0'; r++) {
+		if (!isdigit(*r) || (*r - '0') % 2 != 0) {
+			*w++ = *r;
+		}
+	}
+	*w = '\0';
+	
+	return src;
+}
+
+/* Senza puntatori
+char *delEvenDigits(char *const src) {
+	int w = 0;
+	for (int r = 0; src[r] != '\0'; r++) {
+		if (!isdigit(src[r]) || (src[r] - '0') % 2 != 0) {
+			src[w++] = src[r];
+		}
+	}
+	src[w] = '\0';
+	
+	return src;
+}
+*/
+
+// Con puntatori
+char *delOddDigits(char *const dst) {
+	char *w = dst;
+	for (char *r = dst; *r != '\0'; r++) {
+		if (!isdigit(*r) || (*r - '0') % 2 == 0) {
+			*w++ = *r;
+		}
+	}
+	*w = '\0';
+	
+	return dst;
+}
+
+/* Senza puntatori
+char *delOddDigits(char *const dst) {
+	int w = 0;
+	for (int r = 0; dst[r] != '\0'; r++) {
+		if (!isdigit(dst[r]) || (dst[r] - '0') % 2 == 0) {
+			// Copia
+			dst[w++] = dst[r];
+		}
+	}
+	dst[w] = '\0';
+	
+	return dst;
+}
+*/
\ No newline at end of file
diff --git a/sfusi/dupDigit.cpp b/sfusi/dupDigit.cpp
new file mode 100644
index 0000000..3af32d4
--- /dev/null
+++ b/sfusi/dupDigit.cpp
@@ -0,0 +1,53 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+dupDigit
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *dupDigit(char *const str);
+
+int main(void) {
+	char str[SIZE] = "H3ll0 W0rld! 2025";
+	
+	cout << "Before: " << str << endl;
+	
+	dupDigit(str);
+	
+	cout << "After: " << str << endl;
+	
+	return 0;
+}
+
+// Con puntatori
+char *dupDigit(char *const str) {
+	for (char *r = str; *r != '\0'; r++) {
+		if (isdigit(*r)) {
+			memmove(r + 1, r, strlen(r) + 1);
+			r = r + 1;
+		}
+	}
+	
+	return str;
+}
+
+/* Senza puntatori
+char *dupDigit(char *const str) {
+	for (int i = 0; str[i] != '\0'; i++) {
+		if (isdigit(str[i])) {
+			memmove(&str[i + 1], &str[i], strlen(&str[i]) + 1);
+			i = i + 1;
+		}
+	}
+	
+	return str;
+}
+*/
\ No newline at end of file
diff --git a/sfusi/dupVowels_dupConsonants.cpp b/sfusi/dupVowels_dupConsonants.cpp
new file mode 100644
index 0000000..e342b2d
--- /dev/null
+++ b/sfusi/dupVowels_dupConsonants.cpp
@@ -0,0 +1,96 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+dupVowels & dupConsonants
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+#include <iomanip>
+
+#define SIZE 100+1
+
+using namespace std;
+
+bool isVowel(char c);
+bool isConsonant(char c);
+char *dupVowels(char *const src);
+char *dupConsonants(char *const str);
+
+int main(void) {
+	char src[SIZE] = "12 ottobre 1492";
+	char dst[SIZE];
+	
+	strcpy(dst, src);
+	
+	cout << "Original string: " << setw(16) << src << endl;
+	
+	dupVowels(src);
+	cout << "dupVowels: " << setw(25) << src << endl;
+	
+	dupConsonants(dst);
+	cout << "dupConsonants: " << setw(22) << dst << endl;
+	
+	return 0;
+}
+
+bool isVowel(char c) {
+	return strchr("aeiou", tolower(c));
+}
+
+bool isConsonant(char c) {
+	return strchr("bcdfghjklmnpqrstvwxyz", tolower(c));
+}
+
+// Con puntatori
+char *dupVowels(char *const src) {
+	for (int r = 0; src[r] != '\0'; r++) {
+		if (isVowel(src[r])) {
+			memmove(src + r + 1, src + r, strlen(src + r) + 1);
+			r++;
+		}
+	}
+	
+	return src;
+}
+
+/* Senza puntatori
+char *dupVowels(char *const src) {
+	for (int r = 0; src[r] != '\0'; r++) {
+		if (isVowel(src[r])) {
+			memmove(src + r + 1, src + r, strlen(src + r) + 1);
+			r++;
+		}
+	}
+	
+	return src;
+}
+*/
+
+
+// Con puntatori
+char *dupConsonants(char *const dst) {
+	for (int r = 0; dst[r] != '\0'; r++) {
+		if (isConsonant(dst[r])) {
+			memmove(dst + r + 1, dst + r, strlen(dst + r) + 1);
+			r++;
+		}
+	}
+	
+	return dst;
+}
+
+/* Senza puntatori
+char *dupConsonants(char *const dst) {
+	for (int r = 0; dst[r] != '\0'; r++) {
+		if (isConsonant(dst[r])) {
+			memmove(dst + r + 1, dst + r, strlen(dst + r) + 1);
+			r++;
+		}
+	}
+	
+	return dst;
+}
+*/
\ No newline at end of file
diff --git a/sfusi/esercizio10_stringhe.cpp b/sfusi/esercizio10_stringhe.cpp
new file mode 100644
index 0000000..e8079dd
--- /dev/null
+++ b/sfusi/esercizio10_stringhe.cpp
@@ -0,0 +1,53 @@
+/*
+Nome: Mario
+Cognome: Montanari
+*/
+
+#include <iostream>
+
+#define SIZE 100+1
+
+using namespace std;
+
+int isAlpha(char c);
+int isNum(int c);
+
+int main(void) {
+	char src[SIZE];
+	
+	cin.getline(src, SIZE);
+		
+	if (strlen(src) != 16) {
+		cout << "Codice fiscale incorretto!" << endl;
+	}
+	
+	bool codiceFiscale = true;
+	
+	for (int i = 0; i < 16; i++) {
+		if ((i < 6 && !isAlpha(src[i])) ||
+			(i >= 6 && i < 8 && !isNum(src[i])) ||
+			(i == 8 && !isAlpha(src[i])) ||
+			(i >= 9 && i < 11 && !isNum(src[i])) ||
+			(i == 11 && !isAlpha(src[i])) ||
+			(i >= 12 && i < 15 && !isNum(src[i])) ||
+			(i == 15 && !isAlpha(src[i]))) {
+			codiceFiscale = false;
+		}
+	}
+	
+	if (codiceFiscale) {
+		cout << "Codice fiscale corretto!" << endl;
+	} else {
+		cout << "Codice fiscale incorretto!" << endl;
+	}
+	
+	return 0;
+}
+
+int isAlpha(char c) {
+	return (c >= 'A' && c<= 'Z') || (c >= 'a' && c<= 'z');
+}
+
+int isNum(int c) {
+	return (c >= '0' && c <= '9');
+}
\ No newline at end of file
diff --git a/sfusi/esercizio1_stringhe.cpp b/sfusi/esercizio1_stringhe.cpp
new file mode 100644
index 0000000..abcb486
--- /dev/null
+++ b/sfusi/esercizio1_stringhe.cpp
@@ -0,0 +1,49 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Generare una parola a caso (sicuramente pronunciabile), esempio: MUSETO.
+Consonanti = "BCDFGLMNPRSTVZ".
+Vocali = "AEIOU".
+Ogni sillaba è consonante + vocale, esempio: BA.
+Il numero di sillabe viene deciso da input o in modo randomico.
+*/
+
+#include <iostream>
+#include <cstdlib>
+#include <ctime>
+
+#define MIN_SILLABE 2
+#define MAX_SILLABE 5
+
+using namespace std;
+
+void creaParola(const char strVowel[], const char strConsonant[], int n);
+
+int main(void) {
+	srand(time(NULL));
+	
+	const char strVowel[] = "AEIOU";
+	const char strConsonant[] = "BCDFGLMNPRSTVZ";
+	
+	int n = rand() % (MAX_SILLABE - MIN_SILLABE + 1) + MIN_SILLABE;
+	cout << "Numero di sillabe: " << n << endl;
+	
+	creaParola(strVowel, strConsonant, n);
+	
+	return 0;
+}
+
+void creaParola(const char strVowel[], const char strConsonant[], int n) {
+	int size = (n * 2) + 1;
+	char strParola[size];
+	int index = 0;
+	
+	for (int i = 0; i < n; i++) {
+		strParola[index++] = strConsonant[rand() % 14];
+		strParola[index++] = strVowel[rand() % 5];
+	}
+	
+	strParola[index] = '\0';
+	cout << "Parola generata: " << strParola << endl;
+}
\ No newline at end of file
diff --git a/sfusi/esercizio1_stringhe_generaParolePronunciabili.cpp b/sfusi/esercizio1_stringhe_generaParolePronunciabili.cpp
new file mode 100644
index 0000000..5a828c5
--- /dev/null
+++ b/sfusi/esercizio1_stringhe_generaParolePronunciabili.cpp
@@ -0,0 +1,56 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Generare una parola a caso (sicuramente pronunciabile), esempio: MUSETO.
+Consonanti = "BCDFGLMNPRSTVZ".
+Vocali = "AEIOU".
+Ogni sillaba è consonante + vocale, esempio: BA.
+Il numero di sillabe viene deciso da input o in modo randomico.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <iostream>
+#define N_SILL 4
+
+using namespace std;
+
+void generaParola(int numSillabe, char* parola, int maxLen);
+
+int main() {
+    const int MAX_LEN = 20;
+    char parolaGenerata[MAX_LEN];
+	
+    srand((unsigned)time(NULL));
+    int numSillabe = rand() % 3 + 2;
+	
+    generaParola(numSillabe, parolaGenerata, MAX_LEN);
+	
+    printf("Parola generata: %s\n", parolaGenerata);
+	
+    return 0;
+}
+
+void generaParola(int numSillabe, char* parola, int maxLen) {
+    const char consonanti[] = "BCDFGLMNPRSTVZ";
+    const char vocali[] = "AEIOU";
+	
+    parola[0] = '\0';
+	
+    int currentLen = 0;
+	
+    for (int i = 0; i < numSillabe; i++) {
+        if (currentLen + 2 >= maxLen) break;
+		
+        char sillaba[3];
+        sillaba[0] = consonanti[rand() % (sizeof(consonanti) - 1)];
+        sillaba[1] = vocali[rand() % (sizeof(vocali) - 1)];
+        sillaba[2] = '\0';
+		
+        strcat(parola, sillaba);
+        currentLen += 2;
+    }
+}
diff --git a/sfusi/esercizio20_stringhe.cpp b/sfusi/esercizio20_stringhe.cpp
new file mode 100644
index 0000000..bab4625
--- /dev/null
+++ b/sfusi/esercizio20_stringhe.cpp
@@ -0,0 +1,54 @@
+/*
+Nome: Mario
+Cognome: Montanari
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+void codificaMessaggio(char dst[], const char alfDecod[], const char alfCod[]);
+char *strcpy(char * const dst, const char *src);
+
+int main(void) {
+	char src[SIZE];
+	char dst[SIZE];
+	const char alfDecod[] = "AaBbCcDdEeFfGgHhIiLlMmNnOoPpQqRrSsTtUuVvZz";
+	const char alfCod[] = "OoPpGgTtIiVvCcHhEeRrNnMmAaBbQqLlZzDdUuFfSs";
+	
+	cout << "";
+	cin.getline(src, SIZE);
+	
+	*strcpy(dst, src);
+	
+	codificaMessaggio(dst, alfDecod, alfCod);
+	
+	cout << "" << dst << endl;
+	
+	return 0;
+}
+
+void codificaMessaggio(char dst[], const char alfDecod[], const char alfCod[]) {
+	for (int i = 0; i < strlen(dst); i++) {
+		if ((dst[i] >= 'A' && dst[i] <= 'Z') || (dst[i] >= 'a' && dst[i] <= 'z')) {
+			for (int j = 0; j < strlen(alfCod); j++) {
+				if (dst[i] == alfDecod[j]) {
+					dst[i] = alfCod[j];
+					break;
+				}
+			}
+		}
+	}
+}
+
+char *strcpy(char * const dst, const char *src) {
+	size_t i;
+	for (i = 0; src[i] != '\0'; i++) {
+		dst[i] = src[i];
+	}
+	dst[i] = '\0';
+	return dst;
+}
\ No newline at end of file
diff --git a/sfusi/esercizio2_stringhe_concatenaParoleCasuali.cpp b/sfusi/esercizio2_stringhe_concatenaParoleCasuali.cpp
new file mode 100644
index 0000000..15b4359
--- /dev/null
+++ b/sfusi/esercizio2_stringhe_concatenaParoleCasuali.cpp
@@ -0,0 +1,58 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Concatenare le parole casuali in una stringa frase:
+   - separate da un numero casuale di spazi compreso tra 1 e 3.
+*/
+
+#include <iostream>
+#include <cstdlib>
+#include <ctime>
+
+#define MIN_SILLABE 2
+#define MAX_SILLABE 3
+
+#define MIN_SPAZI 1
+#define MAX_SPAZI 3
+
+using namespace std;
+
+void creaParola(const char strVowel[], const char strConsonant[], const char strSpazio[], int sillabe, int spazi);
+
+int main(void) {
+	srand(time(NULL));
+	
+	const char strVowel[] = "AEIOU";
+	const char strConsonant[] = "BCDFGLMNPRSTVZ";
+	const char strSpazio[] = " ";
+	
+	int sillabe = rand() % (MAX_SILLABE - MIN_SILLABE + 1) + MIN_SILLABE;
+	
+	int spazi = rand() % (MAX_SPAZI - MIN_SPAZI + 1) + MIN_SPAZI;
+	cout << "Numero di spazi: " << spazi << endl;
+	
+	creaParola(strVowel, strConsonant, strSpazio, sillabe, spazi);
+	
+	return 0;
+}
+
+void creaParola(const char strVowel[], const char strConsonant[], const char strSpazio[], int sillabe, int spazi) {
+	int size = (sillabe * 2 * (spazi + 1)) + spazi + 1;
+	char strParola[size];
+	int index = 0;
+	
+	for (int i = 0; i < spazi + 1; i++) {
+		for (int j = 0; j < sillabe; j++) {
+			strParola[index++] = strConsonant[rand() % 14];
+			strParola[index++] = strVowel[rand() % 5];
+		}
+		if (i < spazi) {
+			sillabe = rand() % (MAX_SILLABE - MIN_SILLABE + 1) + MIN_SILLABE;
+			strParola[index++] = strSpazio[0];
+		}
+	}
+	
+	strParola[index] = '\0';
+	cout << "Frase generata: " << strParola << endl;
+}
\ No newline at end of file
diff --git a/sfusi/esercizio6_stringhe_generaPassword.cpp b/sfusi/esercizio6_stringhe_generaPassword.cpp
new file mode 100644
index 0000000..1ae2f69
--- /dev/null
+++ b/sfusi/esercizio6_stringhe_generaPassword.cpp
@@ -0,0 +1,72 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Genarare una password che soddisfa i criteri:
+   - Presenza di almeno una:
+      - minuscola;
+      - maiuscola;
+      - cifra;
+      - punteggiatura;
+   - Lunghezza della password compresa fra 8 e 12 caratteri;
+*/
+
+#include <iostream>
+#include <ctime>
+#include <cstdlib>
+
+#define SIZE 12
+
+#define NSTAMPA_MIN 5
+#define NSTAMPA_MAX 6
+
+#define CARATTERI_MIN 2
+#define CARATTERI_MAX 3
+
+#define MINUSCOLA_MIN 97
+#define MINUSCOLA_MAX 122
+
+#define MAIUSCOLA_MIN 65
+#define MAIUSCOLA_MAX 90
+
+#define CIFRA_MIN 48
+#define CIFRA_MAX 57
+
+#define PUNTEGGIATURA_MIN 33
+#define PUNTEGGIATURA_MAX 47
+
+using namespace std;
+
+void generaPassword(int size, char nMinuscola[], char nMaiuscola[], char nCifra[], char nPunteggiatura[], char nCaratteri);
+
+int main(void) {
+	srand(time(NULL));
+	
+	char nMinuscola[SIZE];
+	char nMaiuscola[SIZE];
+	char nCifra[SIZE];
+	char nPunteggiatura[SIZE];
+	char nCaratteri;
+	
+	generaPassword(SIZE, nMinuscola, nMaiuscola, nCifra, nPunteggiatura, nCaratteri);
+	
+	return 0;
+}
+
+void generaPassword(int size, char nMinuscola[], char nMaiuscola[], char nCifra[], char nPunteggiatura[], char nCaratteri) {
+	int nStampa = rand() % (NSTAMPA_MAX - NSTAMPA_MIN + 1) + NSTAMPA_MIN;
+	for (int j = 0; j < nStampa; j++) {
+		nCaratteri = rand() % (CARATTERI_MAX - CARATTERI_MIN + 1) + CARATTERI_MIN;
+		for (int i = 0; i < nCaratteri; i++) {
+			nMinuscola[i] = rand() % (MINUSCOLA_MAX - MINUSCOLA_MIN + 1) + MINUSCOLA_MIN;
+			cout << nMinuscola[i];
+			nMaiuscola[i] = rand() % (MAIUSCOLA_MAX - MAIUSCOLA_MIN + 1) + MAIUSCOLA_MIN;
+			cout << nMaiuscola[i];
+			nCifra[i] = rand() % (CIFRA_MAX - CIFRA_MIN + 1) + CIFRA_MIN;
+			cout << nCifra[i];
+			nPunteggiatura[i] = rand() % (PUNTEGGIATURA_MAX - PUNTEGGIATURA_MIN + 1) + PUNTEGGIATURA_MIN;
+			cout << nPunteggiatura[i];
+		}
+		cout << endl;
+	}
+}
\ No newline at end of file
diff --git a/sfusi/esercizio7_stringhe_stampaCodiceAsciiCorrispondente.cpp b/sfusi/esercizio7_stringhe_stampaCodiceAsciiCorrispondente.cpp
new file mode 100644
index 0000000..a4c6be5
--- /dev/null
+++ b/sfusi/esercizio7_stringhe_stampaCodiceAsciiCorrispondente.cpp
@@ -0,0 +1,37 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Scrivere una funzione che stampi la stringa ricevuta
+e anche la sequenza di codici ASCII corrispondenti.
+*/
+
+#include <iostream>
+#include <cstdlib>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+void stampaAscii(char *src);
+
+int main(void) {
+	char src[SIZE];
+	
+	cin.getline(src, SIZE);
+	
+	stampaAscii(src);
+	
+	return 0;
+}
+
+void stampaAscii(char *src) {
+	char chr;
+	int asciiCode;
+	for (int i = 0; i < strlen(src); i++) {
+		chr = src[i];
+		asciiCode = chr;
+		cout << chr << "(" << asciiCode << ")" << " ";
+	}
+}
\ No newline at end of file
diff --git a/sfusi/esercizio8_stringhe_stampaTuttiCodiciAscii.cpp b/sfusi/esercizio8_stringhe_stampaTuttiCodiciAscii.cpp
new file mode 100644
index 0000000..fa54089
--- /dev/null
+++ b/sfusi/esercizio8_stringhe_stampaTuttiCodiciAscii.cpp
@@ -0,0 +1,39 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Scrivere una funzione che stampi tutti i codici ASCII:
+   - attenzione ai caratteri non stampabili;
+*/
+
+#include <iostream>
+#include <numeric>
+
+#define SIZE 94
+
+using namespace std;
+
+void stampaArrayChr(char *arrChr, int size);
+
+int main(void) {
+	char arrChr[SIZE];
+	// int nChr = sizeof(arrChr) / sizeof(arrChr[0]);
+	
+	// iota(arrChr, arrChr + nChr, '!');
+	
+	stampaArrayChr(arrChr, SIZE);
+
+	return 0;
+}
+
+void stampaArrayChr(char *arrChr, int size) {
+	for (int i = 0; i < SIZE; i++) {
+		arrChr[i] = '!';
+		arrChr[i] = arrChr[i] + i;
+	}
+	
+	for (int i = 0; i < size; i++) {
+		cout << arrChr[i] << " ";
+	}
+	cout << endl;
+}
\ No newline at end of file
diff --git a/sfusi/esercizio9_stringhe.cpp b/sfusi/esercizio9_stringhe.cpp
new file mode 100644
index 0000000..572c8cf
--- /dev/null
+++ b/sfusi/esercizio9_stringhe.cpp
@@ -0,0 +1,41 @@
+/*
+Nome: Mario
+Cognome: Montanari
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+int isLower(char c) {
+	return (c >= 'a' && c <= 'z');
+}
+
+int toUpper(char c) {
+	if (isLower(c)) {
+		return c - ('a' - 'A');
+	}
+	return c;
+}
+
+int main(void) {
+	char src[SIZE];
+	
+	cin.getline(src, SIZE); 
+	
+	bool nuovaParola = true;
+	
+	for (int i = 0; i < strlen(src); i++) {
+		if (nuovaParola && isLower(src[i])) {
+			src[i] = toUpper(src[i]);
+		}
+		nuovaParola = (src[i] == ' ');
+	}
+	
+	cout << src << endl;
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/sfusi/esercizioInterrogazione_Maruccia.cpp b/sfusi/esercizioInterrogazione_Maruccia.cpp
new file mode 100644
index 0000000..97504ef
--- /dev/null
+++ b/sfusi/esercizioInterrogazione_Maruccia.cpp
@@ -0,0 +1,76 @@
+/*
+Nome: Mario
+Cognome: Montanari
+*/
+
+#include <iostream>
+#include <ctime>
+
+#define USO 20
+#define DIM 2000
+#define VMAX 'z'
+#define VMIN  'a'
+
+using namespace std;
+
+typedef struct{
+    char ch1;
+    char ch2;
+}elemento;
+
+typedef struct{
+    int CVU; //coppie vocali uguali
+    int CCU; //coppie consonanti uguali
+    int posizioni[DIM];
+}result;
+
+void initArray(elemento arr[], int size){
+    for(int i= 0; i < size ; i++){
+        arr[i].ch1 = rand()%(VMAX-VMIN+1)+VMIN;
+        arr[i].ch2 = rand()%(VMAX-VMIN+1)+VMIN;
+    }
+}
+void stampaArray(elemento arr[], int size){
+    for(int i= 0; i < size ; i++){
+        if(arr[i].ch1 == arr[i].ch2){
+            cout << arr[i].ch1 << endl;
+            cout << arr[i].ch2 << endl;
+            cout << endl;
+        }
+    }
+}
+
+result risultato(elemento arr[], int size){
+    int index=0;
+    result risultato = {0,0,0};
+    for(int i = 0; i<size ; i++){
+        if(arr[i].ch1 == arr[i].ch2){
+            risultato.posizioni[index]=i;
+             index++;
+             
+            if(arr[i].ch1 == 'a' || arr[i].ch1 == 'e' || arr[i].ch1 == 'i' || arr[i].ch1 == 'o' || arr[i].ch1 == 'u'){
+                 risultato.CVU++;
+            }
+            else{
+                risultato.CCU++;
+            }
+        }
+    }
+    return risultato;
+}
+
+int main(void){
+    srand(time(NULL));
+    elemento arr[DIM];
+    initArray(arr,USO);
+    stampaArray(arr,USO);
+    result Result = risultato(arr,USO);
+    cout<<"Indici di posizone degli elementi uguali: ";
+    for(int loop=0;loop<Result.CCU+Result.CVU;loop++){
+        cout<<Result.posizioni[loop]<<" ";
+    }
+    cout<<endl;
+    cout<< "Coppie consonanti uguali:" <<Result.CCU<<endl;
+    cout<< "Coppie vocali uguali:" <<Result.CVU<<endl;  
+    return 0;
+}
\ No newline at end of file
diff --git a/sfusi/esercizioInterrogazione_Montanari.cpp b/sfusi/esercizioInterrogazione_Montanari.cpp
new file mode 100644
index 0000000..32ed2d6
--- /dev/null
+++ b/sfusi/esercizioInterrogazione_Montanari.cpp
@@ -0,0 +1,66 @@
+/*
+Nome: Mario
+Cognome: Montanari
+Classe: 3AIN
+
+Inizializzare un array di elemento con una capacità massima
+di 100 o di SIZE con le lettere dell'alfabeto e 0 nel campo numerico.
+
+Contare le occorrenze delle lettere e memorizzarne il valore nell'array.
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100
+
+using namespace std;
+
+typedef struct {
+	char car;
+	int num;
+} elemento;
+
+void init(elemento arr[], int size) {
+	for (int i = 0; i < size; i++) {
+		arr[i].car = 'A' + i;
+		arr[i].num = 0;
+	}
+}
+
+void stampa(elemento arr[], int size) {
+	for (int i = 0; i < size; i++) {
+		cout << arr[i].car << ": " << arr[i].num << endl;
+	}
+}
+
+void conta(elemento arr[], char str[], int size) {
+	
+	for (int i = 0; str[i] != '\0'; i++) {
+		int j = 0;
+		while (str[i] != arr[j].car) {
+			j++;
+		}
+		arr[j].num++;
+	}
+}
+
+int main(void) {
+	elemento arr[SIZE];
+	int lunghezzaAlfabeto = ('Z' - 'A') + 1;
+	char str[SIZE];
+	
+	cout << "Inserisci una parola: ";
+	cin.getline(str, SIZE);
+	
+	for (int i = 0; str[i] != '\0'; i++) {
+		str[i] = toupper(str[i]);
+	}
+	
+	init(arr, lunghezzaAlfabeto);
+	conta(arr, str, lunghezzaAlfabeto);
+	stampa(arr, lunghezzaAlfabeto);
+
+	return 0;
+}
\ No newline at end of file
diff --git a/sfusi/esercizioInterrogazione_Nyerges.cpp b/sfusi/esercizioInterrogazione_Nyerges.cpp
new file mode 100644
index 0000000..0906605
--- /dev/null
+++ b/sfusi/esercizioInterrogazione_Nyerges.cpp
@@ -0,0 +1,87 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Contare il numero di vocali minuscole e
+maiuscole contenute in una frase data in input.
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+typedef struct{
+    int nVocMin;
+    int nVocMai;
+} result;
+
+result vocali (char str[], int size);
+bool isVocMin(char chr);
+bool isVocMai(char chr);
+
+int main (void){
+    char str[SIZE];
+    result risultato;
+	
+	cout << "Inserisci una frase: ";
+	cin.getline(str, SIZE);
+	
+	risultato = vocali(str, sizeof(str)/sizeof(str[0]));
+    
+    cout << endl << "Numero di vocali minuscole: " << risultato.nVocMin << endl;
+	cout << "Numero di vocali maiuscole: " << risultato.nVocMai << endl;
+    
+    return 0;
+}
+
+result vocali (char str[], int size){
+    result res = {0, 0};
+    
+    for(int i = 0; i < size; i++){
+    	
+        if(isVocMin(str[i])){
+            res.nVocMin++;
+        }
+        
+        if(isVocMai(str[i])){
+            res.nVocMai++;
+        }
+    }
+    
+    return res;
+}
+
+bool isVocMin(char chr){
+    bool isMin = false;
+    
+    if(
+		chr == 'a' ||
+		chr == 'e' ||
+		chr == 'i' ||
+		chr == 'o' ||
+		chr == 'u'
+	){
+        isMin = true;
+    }
+   
+    return isMin;
+}
+
+bool isVocMai(char chr){
+    bool isMai = false;
+    
+    if (
+		chr == 'A' ||
+		chr == 'E' ||
+		chr == 'I' ||
+		chr == 'O' ||
+		chr == 'U'
+	){
+        isMai = true;
+    }
+   
+    return isMai;
+}
\ No newline at end of file
diff --git a/sfusi/formattaData.cpp b/sfusi/formattaData.cpp
new file mode 100644
index 0000000..d03b21f
--- /dev/null
+++ b/sfusi/formattaData.cpp
@@ -0,0 +1,46 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+formattaData
+*/
+
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+
+#define SIZE 100+1
+#define NUM_MESI 12
+
+using namespace std;
+
+void formattaData(char *const data);
+
+int main(void) {
+	char data[SIZE];
+	
+	cout << "Inserisci una data: ";
+	cin.getline(data, SIZE);
+	
+	formattaData(data); 
+	
+	return 0;
+}
+
+void formattaData(char *const data) {
+	const char *mesi[NUM_MESI] = {"gennaio", "febbraio", "marzo", "aprile", "maggio", "giugno", "luglio", "agosto", "settembre", "ottobre", "novembre", "dicembre"};
+	int gg;
+	int mm;
+	int aaaa;
+	
+	sscanf(data, "%d/%d/%d", &gg, &mm, &aaaa);
+	
+	if (mm < 0 || mm > NUM_MESI || mm == 0) {
+		cout << "Mese inserito non valido!" << endl;
+		return;
+	}
+	
+	sprintf(data, "%02i %s %04i", gg, mesi[mm - 1], aaaa);
+	
+	cout << "Data formattata: " << data << endl;
+}
\ No newline at end of file
diff --git a/sfusi/getDigit.cpp b/sfusi/getDigit.cpp
new file mode 100644
index 0000000..60a4acd
--- /dev/null
+++ b/sfusi/getDigit.cpp
@@ -0,0 +1,58 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+getDigit
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *getDigit(char *const str);
+
+int main(void) {
+	char str[SIZE] = "H3ll0 W0rld! 2025";
+	
+	cout << "Before: " << str << endl;
+	
+	getDigit(str);
+	
+	cout << "After: " << str << endl;
+	
+	return 0;
+}
+
+// Con puntatori
+char *getDigit(char *const str) {
+	char *w = str;
+	
+	for (char *r = str; *r != '\0'; r++) {
+		if (isdigit(*r)) {
+			*w++ = *r;
+		}
+	}
+	
+	*w = '\0';
+	
+	return str;
+}
+
+/* Senza puntatori
+char *getDigit(char *const str) {
+	int w = 0;
+	
+	for (int r = 0; str[r] != '\0'; r++) {
+		if (isdigit(str[r])) {
+			str[w++] = str[r];
+		}
+	}
+	
+	str[w] = '\0';
+	
+	return str;
+}
+*/
\ No newline at end of file
diff --git a/sfusi/isAnagram.cpp b/sfusi/isAnagram.cpp
new file mode 100644
index 0000000..4d235a7
--- /dev/null
+++ b/sfusi/isAnagram.cpp
@@ -0,0 +1,70 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+isAnagram
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100+1
+#define NUM_LETT 26
+
+using namespace std;
+
+bool isAnagram(char *src1, char *src2);
+
+int main(void) {
+	char src1[SIZE];
+	char src2[SIZE];
+	
+	cout << "Prima parola: ";
+	cin.getline(src1, SIZE);
+	
+	cout << "Seconda parola: ";
+	cin.getline(src2, SIZE);
+	
+	if (isAnagram(src1, src2)) {
+		cout << "Le due parole sono anagrammi." << endl;
+	} else {
+		cout << "Le due parole non sono anagrammi." << endl;
+	}
+	
+	return 0;
+}
+
+bool isAnagram(char *src1, char *src2) {
+	for (int i = 0; i < strlen(src1); i++) {
+		src1[i] = tolower(src1[i]);
+	}
+	
+	for (int i = 0; i < strlen(src2); i++) {
+		src2[i] = tolower(src2[i]);
+	}
+	
+	if (strlen(src1) != strlen(src2)) {
+		return false;
+	}
+	
+	for (int i = 0; i < strlen(src1); i++) {
+		if (strchr(src2, src1[i]) == NULL) {
+			return false;
+		}
+	}
+	
+	int count[26] = {0};
+	for (int i = 0; i < strlen(src1); i++) {
+		count[tolower(src1[i]) - 'a']++;
+		count[tolower(src2[i]) - 'a']--;
+	}
+	
+	for (int i = 0; i < NUM_LETT; i++) {
+		if (count[i] != 0) {
+			return false;
+		}
+	}
+	
+	return true;
+}
\ No newline at end of file
diff --git a/sfusi/isMonovocalic.cpp b/sfusi/isMonovocalic.cpp
new file mode 100644
index 0000000..eaf6ad5
--- /dev/null
+++ b/sfusi/isMonovocalic.cpp
@@ -0,0 +1,82 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+isMonovocalic
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 30+1
+
+using namespace std;
+
+/*
+int isConsonant(char c);
+*/
+
+int isVowel(char c);
+void isMonovocalic(const char *str);
+
+int main(void) {
+	char str[SIZE];
+	
+	cout << "Inserisci una parola: ";
+	cin >> str;
+	
+	for (int i = 0; str[i] != '\0'; i++) {
+		str[i] = toupper(str[i]);
+	}
+	
+	isMonovocalic(str);
+	
+	return 0;
+}
+
+/*
+int isConsonant(char c) {
+	return ((c >= 'A' && c <= 'Z') || (c > 'a' && c <= 'z'))
+		&& !isVowel(c);
+}
+*/
+
+int isVowel(char c) {
+	return c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U'
+		|| c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
+}
+
+void isMonovocalic(const char *str) {
+	bool isA = false;
+	bool isE = false;
+	bool isI = false;
+	bool isO = false;
+	bool isU = false;
+	
+	for (int i = 0; str[i] != '\0'; i++) {
+		if (str[i] == 'A') {
+			isA = true;
+		} else if (str[i] == 'E') {
+			isE = true;
+		} else if (str[i] == 'I') {
+			isI = true;
+		} else if (str[i] == 'O') {
+			isO = true;
+		} else if (str[i] == 'U') {
+			isU = true;
+		}
+	}
+	
+	int vowelCount = 0;
+    if (isA) vowelCount++;
+    if (isE) vowelCount++;
+    if (isI) vowelCount++;
+    if (isO) vowelCount++;
+    if (isU) vowelCount++;
+	
+	if (vowelCount == 1) {
+		cout << "Parola monovocalica" << endl;
+	} else {
+		cout << "Parola non monovocalica" << endl;
+	}
+}
\ No newline at end of file
diff --git a/sfusi/isPangram.cpp b/sfusi/isPangram.cpp
new file mode 100644
index 0000000..1b77c28
--- /dev/null
+++ b/sfusi/isPangram.cpp
@@ -0,0 +1,54 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+isPangram
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+bool isPangram(char *src1);
+
+int main(void) {
+	char src1[SIZE];
+	
+	cout << "Prima frase: ";
+	cin.getline(src1, SIZE);
+	
+	if (isPangram(src1)) {
+		cout << "La fare e' un Pangramma." << endl;
+	} else {
+		cout << "La frase non e' un pangramma." << endl;
+	}
+	
+	return 0;
+}
+
+bool isPangram(char *src1) {
+	for (int i = 0; i < strlen(src1); i++) {
+		src1[i] = tolower(src1[i]);
+	}
+	
+	for (char ch = 'a'; ch <= 'z'; ch++) {
+		bool letterFound = false;
+		
+		for (int i = 0; i < strlen(src1); i++) {
+			if (src1[i] == ch) {
+				letterFound = true;
+				break;
+			}
+		}
+		
+		if (!letterFound) {
+			return false;
+		}
+	}
+	
+	return true;
+}
\ No newline at end of file
diff --git a/sfusi/isSymmetricVowel.cpp b/sfusi/isSymmetricVowel.cpp
new file mode 100644
index 0000000..dc3c58f
--- /dev/null
+++ b/sfusi/isSymmetricVowel.cpp
@@ -0,0 +1,58 @@
+/*
+Nome: Mario
+Cognome: Montanari
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+bool isVowel(char chr);
+bool isSymmetricVowel(const char *const str);
+
+int main(void) {
+	char str[SIZE];
+	
+	cout << "Inserisci una parola: ";
+	cin.getline(str, SIZE);
+	
+	if (isSymmetricVowel(str)) {
+		cout << "Le vocali sono simmetriche!" << endl;
+	} else {
+		cout << "Le vocali non sono simmetriche!" << endl;
+	}
+	
+	return 0;
+}
+
+bool isVowel(char chr) {
+	return (chr == 'A' || chr == 'a'
+		|| chr == 'E' || chr == 'e'
+		|| chr == 'I' || chr == 'i'
+		|| chr == 'O' || chr == 'o'
+		|| chr == 'U' || chr == 'u');
+}
+
+bool isSymmetricVowel(const char *const str) {
+	if (*str != '\0') {
+		for (const char *pl = str, *pr = str + strlen(str) - 1; pl < pr; pl++, pr--) {
+			while (*pl != '\0' && !isVowel(*pl)) {
+				pl++;
+			}
+			
+			while (pr >= str && !isVowel(*pr)) {
+				pr--;
+			}
+			
+			if (pl < pr && tolower(*pl) != tolower(*pr)) {
+				return false;
+			}
+		}
+	}
+	
+	return true;
+}
\ No newline at end of file
diff --git a/sfusi/parolaCensurata.cpp b/sfusi/parolaCensurata.cpp
new file mode 100644
index 0000000..e901297
--- /dev/null
+++ b/sfusi/parolaCensurata.cpp
@@ -0,0 +1,36 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+parolaCensurata
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *parolaCensurata(char *const str, const char *substr);
+
+int main(void) {
+	char str[] = "fuck all the world!";
+	const char substr[] = "fuck";
+	
+	cout << "Frase originale: " << str << endl;
+	
+	cout << "Frase censurata: " << parolaCensurata(str, substr);
+	
+	return 0;
+}
+
+char *parolaCensurata(char *const str, const char *substr) {
+	int len = strlen(substr);
+	
+	for (char *pc = str; (pc = strstr(pc, substr)) != NULL; pc = pc + len) {
+		memset(pc + 1, '*', len - 2);
+	}
+	
+	return str;
+}
\ No newline at end of file
diff --git a/sfusi/pigLatin.cpp b/sfusi/pigLatin.cpp
new file mode 100644
index 0000000..bcc5e66
--- /dev/null
+++ b/sfusi/pigLatin.cpp
@@ -0,0 +1,62 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+pigLatin
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+bool isVowel(char chr);
+void pigLatin(char *mssg);
+
+int main(void) {
+	char mssg[SIZE];
+	
+	cout << "Inserisci una frase: ";
+	cin.getline(mssg, SIZE);
+	
+	pigLatin(mssg);
+	
+	return 0;
+}
+
+bool isVowel(char chr) {
+	return (
+		chr == 'A' || chr == 'a' ||
+		chr == 'E' || chr == 'e' ||
+		chr == 'I' || chr == 'i' ||
+		chr == 'O' || chr == 'o' ||
+		chr == 'U' || chr == 'u'
+	);
+}
+
+void pigLatin(char *mssg) {
+	char *token = strtok(mssg, " ");
+	
+	while (token != nullptr) {
+		int len = strlen(token);
+		
+		if (isVowel(token[0])) {
+			cout << token << "way ";
+		} else {
+			char first = token[0];
+			for (int i = 0; i < len - 1; i++) {
+				token[i] = token[i + 1];
+			}
+			token[len - 1] = first;
+			token[len] = '\0';
+			
+			cout << token << "ay ";
+		}
+		
+		token = strtok(nullptr, " ");
+	}
+	
+	cout << endl;
+}
\ No newline at end of file
diff --git a/sfusi/removeDigit.cpp b/sfusi/removeDigit.cpp
new file mode 100644
index 0000000..cc7e754
--- /dev/null
+++ b/sfusi/removeDigit.cpp
@@ -0,0 +1,58 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+removeDigit (come delDigit)
+*/
+
+#include <iostream>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *removeDigit(char *const str);
+
+int main(void) {
+	char str[SIZE] = "H3ll0 W0rld! 2025";
+	
+	cout << "Before: " << str << endl;
+	
+	removeDigit(str);
+	
+	cout << "After: " << str << endl;
+	
+	return 0;
+}
+
+// Con puntatori
+char *removeDigit(char *const str) {
+	char *w = str;
+	
+	for (char *r = str; *r != '\0'; r++) {
+		if (!isdigit(*r)) {
+			*w++ = *r;
+		}
+	}
+	
+	*w = '\0';
+	
+	return str;
+}
+
+/* Senza puntatori
+char *removeDigit(char *const str) {
+	int w = 0;
+	
+	for (int r = 0; str[r] != '\0'; r++) {
+		if (!isdigit(str[r])) {
+			str[w++] = str[r];
+		}
+	}
+	
+	str[w] = '\0';
+	
+	return str;
+}
+*/
\ No newline at end of file
diff --git a/sfusi/strcasecmp().cpp b/sfusi/strcasecmp().cpp
new file mode 100644
index 0000000..91fdd00
--- /dev/null
+++ b/sfusi/strcasecmp().cpp
@@ -0,0 +1,56 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strcasecmp()
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+int strcasecmp(const char *src1, const char *src2);
+
+int main(void) {
+	char src1[SIZE];
+	char src2[SIZE];
+	int result;
+	
+	cout << "Inserisci una prima frase: ";
+	cin.getline(src1, SIZE);
+	
+	cout << "Inserisci una seconda frase: ";
+	cin.getline(src2, SIZE);
+	
+	result = strcasecmp(src1, src2);
+	
+	if (result == 0) {
+		cout << endl << "src1 = src2" << endl;
+	} else if (result < 0) {
+		cout << endl << "src1 < src2" << endl;
+	} else {
+		cout << endl  << "src1 > src2" << endl;
+	}
+	
+	return 0;
+}
+
+int strcasecmp(const char *src1, const char *src2) {
+	while (*src1 && src2) {
+		char chr1 = tolower(*src1);
+		char chr2 = tolower(*src2);
+		
+		if (chr1 != chr2) {
+			return chr1 - chr2;
+		}
+		
+		src1++;
+		src2++;
+	}
+	
+	return tolower(*src1) - tolower(*src2);
+}
\ No newline at end of file
diff --git a/sfusi/strcat().cpp b/sfusi/strcat().cpp
new file mode 100644
index 0000000..e495125
--- /dev/null
+++ b/sfusi/strcat().cpp
@@ -0,0 +1,43 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strcat()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strcat(char *src1, const char *src2);
+
+int main(void) {
+	char src1[SIZE];
+	char src2[] = "@studenti.itisravenna.it";
+	char *ptr;
+	
+	cout << "Inserisci il nome utente della tua email scolastica: ";
+	cin >> src1;
+	
+	ptr = strcat(src1, src2);
+	
+	cout << "Email scolastica: " << ptr << endl;
+	
+	return 0;
+}
+
+char *strcat(char *src1, const char *src2) {
+	int i;
+	int len = strlen(src1);
+	
+	for (i = 0; src2[i] != '\0'; i++) {
+		src1[len + i] = src2[i];
+	}
+	
+	src1[len + i] = '\0';
+	
+	return src1;
+}
\ No newline at end of file
diff --git a/sfusi/strchr().cpp b/sfusi/strchr().cpp
new file mode 100644
index 0000000..5bd698f
--- /dev/null
+++ b/sfusi/strchr().cpp
@@ -0,0 +1,44 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strchr()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strchr(const char *src, int c);
+
+int main(void) {
+	char src[SIZE];
+	char *ptr;
+	int chr = 'a';
+	
+	cout << "Inserisci una parola o una frase: ";
+	cin.getline(src, SIZE);
+	
+	ptr = strchr(src, chr);
+	
+	if (ptr != nullptr) {
+		cout << ptr << endl;
+	} else {
+		cout << "Character not found!" << endl;
+	}
+	
+	return 0;
+}
+
+char *strchr(const char *src, int c) {
+	do {
+		if (*src == c) {
+			return (char*)src;
+		}
+	} while (*src++);
+	
+	return NULL;
+}
\ No newline at end of file
diff --git a/sfusi/strcmp().cpp b/sfusi/strcmp().cpp
new file mode 100644
index 0000000..26d1d55
--- /dev/null
+++ b/sfusi/strcmp().cpp
@@ -0,0 +1,49 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strcmp()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+int strcmp(const char *src1, const char *src2);
+
+int main(void) {
+	char src1[SIZE];
+	char src2[SIZE];
+	int result;
+	
+	cout << "Inserisci una prima frase: ";
+	cin.getline(src1, SIZE);
+	
+	cout << "Inserisci una seconda frase: ";
+	cin.getline(src2, SIZE);
+	
+	result = strcmp(src1, src2);
+	
+	if (result == 0) {
+		cout << endl << "src1 = src2" << endl;
+	} else if (result < 0) {
+		cout << endl << "src1 < src2" << endl;
+	} else {
+		cout << endl  << "src1 > src2" << endl;
+	}
+	
+	return 0;
+}
+
+int strcmp(const char *src1, const char *src2) {
+	for (; *src1 == *src2; src1++, src2++) {
+		if (*src1 == '\0') {
+			return 0;
+		}
+	}
+	
+	return *src1 - *src2;
+}
\ No newline at end of file
diff --git a/sfusi/strcpy().cpp b/sfusi/strcpy().cpp
new file mode 100644
index 0000000..7ec1eaa
--- /dev/null
+++ b/sfusi/strcpy().cpp
@@ -0,0 +1,42 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strcpy()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strcpy(char *dst, const char *src);
+
+int main(void) {
+	char src[SIZE] = "mario.montanari@studenti.itisravenna.it";
+	char dst[SIZE];
+	char *ptr;
+	
+	ptr = strcpy(dst, src);
+	
+	cout << src << endl;
+	cout << ptr << endl;
+	
+	return 0;
+}
+
+char *strcpy(char *dst, const char *src) {
+	const char *ptr = dst;
+	
+	while (*src) {
+		*dst = *src;
+		dst++;
+		src++;
+	}
+	
+	*dst = '\0';
+	
+	return (char*)ptr;
+}
\ No newline at end of file
diff --git a/sfusi/strncat().cpp b/sfusi/strncat().cpp
new file mode 100644
index 0000000..2955f7d
--- /dev/null
+++ b/sfusi/strncat().cpp
@@ -0,0 +1,47 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strncat()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strncat(char *dst, const char *src, int n);
+
+int main(void) {
+	char src[SIZE] = "mario.montanari@studenti.itisravenna.it";
+	char dst[SIZE];
+	char *ptr;
+	
+	ptr = strncat(dst, src, 15);
+	
+	cout << src << endl;
+	cout << ptr << endl;
+	
+	return 0;
+}
+
+char *strncat(char *dst, const char *src, int n) {
+	const char *ptr = dst;
+	
+	while (*dst) {
+		*dst++;
+	}
+	
+	while (n > 0 && *src) {
+		*dst = *src;
+		dst++;
+		src++;
+		n--;
+	}
+	
+	*dst = '\0';
+	
+	return (char*)ptr;
+}
\ No newline at end of file
diff --git a/sfusi/strncmp().cpp b/sfusi/strncmp().cpp
new file mode 100644
index 0000000..4bc8c68
--- /dev/null
+++ b/sfusi/strncmp().cpp
@@ -0,0 +1,55 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strncmp()
+*/
+
+#include <iostream>
+
+#define SIZE 40
+
+using namespace std;
+
+int strncmp(const char *src1, const char *src2, int count);
+
+int main(void) {
+	char src1[SIZE];
+	char src2[SIZE];
+	int result;
+	
+	cout << "Inserisci una prima frase: ";
+	cin.getline(src1, SIZE);
+	
+	cout << "Inserisci una seconda frase: ";
+	cin.getline(src2, SIZE);
+	
+	result = strncmp(src1, src2, 1);
+	
+	if (result == 0) {
+		cout << "src1 = src2" << endl;
+	} else if (result < 0) {
+		cout << "src1 < src2" << endl;
+	} else {
+		cout << "src1 > src2" << endl;
+	}
+	
+	return 0;
+}
+
+int strncmp(const char *src1, const char *src2, int count) {
+	int i = 0;
+	
+	while (i < count && src1[i] != '\0' && src2[i] != '\0') {
+		if (src1[i] != src2[i]) {
+			return src1[i] - src2[i];
+		}
+		i++;
+	}
+	
+	if (i < count) {
+		return src1[i] - src2[i];
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/sfusi/strncpy().cpp b/sfusi/strncpy().cpp
new file mode 100644
index 0000000..ee7eece
--- /dev/null
+++ b/sfusi/strncpy().cpp
@@ -0,0 +1,49 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strncpy()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strncpy(char *dst, const char *src, int n);
+
+int main(void) {
+	char src[SIZE] = "mario.montanari@studenti.itisravenna.it";
+	char dst[SIZE];
+	char *ptr;
+	
+	ptr = strncpy(dst, src, 15);
+	
+	cout << src << endl;
+	cout << ptr << endl;
+	
+	return 0;
+}
+
+char *strncpy(char *dst, const char *src, int n) {
+	const char *ptr = dst;
+	
+	while (n > 0 && *src) {
+		*dst = *src;
+		dst++;
+		src++;
+		n--;
+	}
+	
+	while (n > 0) {
+		*dst = '\0';
+		dst++;
+		n--;
+	}
+	
+	*dst = '\0';
+	
+	return (char*)ptr;
+}
\ No newline at end of file
diff --git a/sfusi/strpad.cpp b/sfusi/strpad.cpp
new file mode 100644
index 0000000..958072d
--- /dev/null
+++ b/sfusi/strpad.cpp
@@ -0,0 +1,35 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strpad usando C++.
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strpad(char *const str, unsigned start, unsigned end, char pad);
+
+int main(void) {
+	char str[SIZE] = "Buonasera";
+	
+	cout << str << endl;
+	cout << strpad(str, 4, 3, '*') << endl;
+	
+	return 0;
+}
+
+char *strpad(char *const str, unsigned start, unsigned end, char pad) {
+	memmove(str + start, str, strlen(str) + 1);
+	memset(str, pad, start);
+	
+	str[strlen(str) + end] = '\0';
+	
+	memset(str + strlen(str), pad, end);
+	
+	return str;
+}
\ No newline at end of file
diff --git a/sfusi/strpbrk().cpp b/sfusi/strpbrk().cpp
new file mode 100644
index 0000000..ca9b8e7
--- /dev/null
+++ b/sfusi/strpbrk().cpp
@@ -0,0 +1,46 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strpbrk()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strpbrk(const char *src1, const char *src2);
+
+int main(void) {
+	char src1[SIZE] = "mario.montanari@studenti.itisravenna.it";
+	char src2[SIZE] = "aeiou";
+	char *ptr;
+	
+	ptr = strpbrk(src1, src2);
+	
+	cout << src1 << endl;
+	
+	if (ptr != nullptr) {
+		cout << ptr << endl;
+	} else {
+		cout << "Character not found!" << endl;
+	}
+	
+	return 0;
+}
+
+char *strpbrk(const char *src1, const char *src2) {
+	while (*src1) {
+		for (const char *ptr = src2; *ptr != '\0'; ptr++) {
+			if (*src1 == *ptr) {
+				return (char*)src1;
+			}
+		}
+		src1++;
+	}
+	
+	return nullptr;
+}
\ No newline at end of file
diff --git a/sfusi/strrchr().cpp b/sfusi/strrchr().cpp
new file mode 100644
index 0000000..f9596fd
--- /dev/null
+++ b/sfusi/strrchr().cpp
@@ -0,0 +1,41 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strrchr()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 40
+
+using namespace std;
+
+char *strrchr(const char *src, int c);
+
+int main(void) {
+	char src[SIZE] = "mario.montanari@studenti.itisravenna.it";
+	char *ptr;
+	int chr = 'a';
+	
+	ptr = strrchr(src, chr);
+	
+	cout << src << endl;
+	cout << ptr << endl;
+	
+	return 0;
+}
+
+char *strrchr(const char *src, int c) {
+	const char *ptr = nullptr;
+	
+	while (*src) {
+		if (*src == c) {
+			ptr = src;
+		}
+		src++;
+	}
+	
+	return (char*)ptr;
+}
\ No newline at end of file
diff --git a/sfusi/strstr().cpp b/sfusi/strstr().cpp
new file mode 100644
index 0000000..f317659
--- /dev/null
+++ b/sfusi/strstr().cpp
@@ -0,0 +1,56 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+strstr()
+*/
+
+#include <iostream>
+#include <cstring>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *strstr(const char *src1, const char *src2);
+
+int main(void) {
+	char src1[SIZE] = "Ciao a tutti, come state?";
+	char src2[SIZE] = "tutti";
+	char *result;
+	
+	cout << "Stringa iniziale: " << src1 << endl;
+	cout << "Sottostringa da trovare: " << src2 << endl;
+	
+	result = strstr(src1, src2);
+	
+	if (result != nullptr) {
+		cout << endl << "Sottostringa trovata: " << result << endl;
+	} else {
+		cout << endl  << "Sottostringa non trovata." << endl;
+	}
+	
+	return 0;
+}
+
+char *strstr(const char *src1, const char *src2) {
+	if (!*src2) return (char*)src1;
+	
+	while (*src1) {
+		const char *ptr1 = src1;
+		const char *ptr2 = src2;
+		
+		while (*ptr1 && *ptr2 && *ptr1 == *ptr2) {
+			ptr1++;
+			ptr2++;
+		}
+		
+		if (!*ptr2) {
+			return (char*)src1;
+		}
+		
+		src1++;
+	}
+	
+	return nullptr;
+}
\ No newline at end of file
diff --git a/sfusi/struct_libri.cpp b/sfusi/struct_libri.cpp
new file mode 100644
index 0000000..f61c92a
--- /dev/null
+++ b/sfusi/struct_libri.cpp
@@ -0,0 +1,142 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+Si crei la struttura libro, in cui ogni libro ha
+un codice numerico (numero intero) che lo caratterizza,
+un titolo, un autore, un numero di pagine e un costo.
+   - si memorizzino i dati di tre libri;
+   - si calcoli il costo medio per pagina dei libri;
+   - si stampino i dati dei tre libri in ordine crescente di costo per pagina;
+   - si stampino i dati dei tre libri in ordine crescente di titolo.
+
+*/
+
+#include <iostream>
+#include <ctime>
+#include <iomanip>
+
+#define SIZE 100+1
+
+#define N_LIBRI 3
+
+#define MIN_SILLABE 2
+#define MAX_SILLABE 5
+
+#define MIN_COD 10000
+#define MAX_COD 99999
+
+#define MIN_TITOLO 65
+#define MAX_TITOLO 90
+
+#define MIN_PAG 100
+#define MAX_PAG 900
+
+#define MIN_COSTO 1000
+#define MAX_COSTO 9000
+
+using namespace std;
+
+typedef struct {
+	int nCod;
+	char titolo[SIZE];
+	char autore[SIZE];
+	int nPag;
+	float costo;
+	int costoPerPagina;
+} libro;
+
+int cmpCostoPerPagina(const void *x, const void *y);
+int cmpTitolo(const void *x, const void *y);
+void generaCaratteristiche(libro caratteristiche[]);
+void stampaCaratteristiche(libro caratteristiche[]);
+
+int main(void) {
+	srand(time(NULL));
+	libro caratteristiche[N_LIBRI];
+	int nSillabe = 0;
+	
+	generaCaratteristiche(caratteristiche);
+	
+	cout << "--- Ordinazione crescente in base al costo medio per pagina --------------------------------------------" << endl << endl;
+	qsort(caratteristiche, N_LIBRI, sizeof(libro), cmpCostoPerPagina);
+	stampaCaratteristiche(caratteristiche);
+	
+	cout << endl << endl << endl << "--- Ordinazione crescente in base al titolo ------------------------------------" << endl << endl;	
+	qsort(caratteristiche, N_LIBRI, sizeof(libro), cmpTitolo);
+	stampaCaratteristiche(caratteristiche);
+	
+	return 0;
+}
+
+int cmpCostoPerPagina(const void *x, const void *y) {
+	const libro *libroX = (const libro *)x;
+	const libro *libroY = (const libro *)y;
+	
+	return libroY->costoPerPagina - libroX->costoPerPagina;
+}
+
+int cmpTitolo(const void *x, const void *y) {
+	const libro *libroX = (const libro *)x;
+	const libro *libroY = (const libro *)y;
+	
+	return strcmp(libroX->titolo, libroY->titolo);
+}
+
+void generaCaratteristiche(libro caratteristiche[]) {
+	const char vocali[] = "AEIOU";
+	const char consonanti[] = "BCDFGHJKLMNPQRSTVWXYZ";
+	
+	for (int i = 0; i < N_LIBRI; i++) {
+		
+		caratteristiche[i].nCod = rand() % (MAX_COD - MIN_COD + 1) + MIN_COD;
+		// 'setfill('.')' riempie gli spazi vuoti con dei punti
+		
+		int nSillabe = rand() % (MAX_SILLABE - MIN_SILLABE + 1) + MIN_SILLABE;
+		
+		int r = 0;
+		for (int j = 0; j < nSillabe; j++) {
+			caratteristiche[i].titolo[r++] = consonanti[rand() % 21];
+			caratteristiche[i].titolo[r++] = vocali[rand() % 5];
+		}
+		caratteristiche[i].titolo[r] = '\0';
+		
+		nSillabe = rand() % (MAX_SILLABE - MIN_SILLABE + 1) + MIN_SILLABE;
+		
+		int w = 0;
+		for (int j = 0; j < nSillabe; j++) {
+			caratteristiche[i].autore[w++] = consonanti[rand() % 16];
+			caratteristiche[i].autore[w++] = vocali[rand() % 5];
+		}
+		
+		caratteristiche[i].autore[w++] = ' ';
+		
+		nSillabe = rand() % (MAX_SILLABE - MIN_SILLABE + 1) + MIN_SILLABE;
+		
+		for (int j = 0; j < nSillabe; j++) {
+			caratteristiche[i].autore[w++] = consonanti[rand() % 16];
+			caratteristiche[i].autore[w++] = vocali[rand() % 5];
+		}
+		caratteristiche[i].autore[w] = '\0';
+				
+		caratteristiche[i].nPag = rand() % (MAX_PAG - MIN_PAG + 1) + MIN_PAG;
+		
+		caratteristiche[i].costo = rand() % (MAX_COSTO - MIN_COSTO + 1) + MIN_COSTO;
+		
+		caratteristiche[i].costoPerPagina = caratteristiche[i].costo / caratteristiche[i].nPag;
+		// 'fixed' imposta il numero in virgola fissa
+		// 'setprecision(2)' limita a 2 cifre decimali il numero
+	}
+}
+
+void stampaCaratteristiche(libro caratteristiche[]) {
+	for (int i = 0; i < N_LIBRI; i++) {
+		cout << "Libro " << "'" << caratteristiche[i].titolo << "':" << endl;
+		cout << "  Codice numerico: " << setfill('.') << setw(18) << " " << caratteristiche[i].nCod << endl;
+		cout << "  Titolo: " << setw(27) << " " << caratteristiche[i].titolo << endl;
+		cout << "  Autore: " << setw(27) << " " << caratteristiche[i].autore << endl;
+		cout << "  Numero pagine: " << setw(20) << " " << caratteristiche[i].nPag << " pagine" << endl;
+		cout << "  Costo: " << setw(28) << " " << caratteristiche[i].costo / 100 << " euro" << endl;
+		cout << "  Costo medio per pagina: " << setw(11) << fixed << setprecision(2) << " " << caratteristiche[i].costoPerPagina << " centesimi" << endl << endl;
+	}
+}
\ No newline at end of file
diff --git a/sfusi/tripleDigit.cpp b/sfusi/tripleDigit.cpp
new file mode 100644
index 0000000..4eb2ea9
--- /dev/null
+++ b/sfusi/tripleDigit.cpp
@@ -0,0 +1,73 @@
+/*
+Nome: Mario
+Cognome: Montanari
+
+tripleDigit
+*/
+
+#include <iostream>
+#include <cstring>
+#include <cctype>
+
+#define SIZE 100+1
+
+using namespace std;
+
+char *tripleDigit(char *const str);
+
+int main(void) {
+	char str[SIZE] = "H3ll0 W0rld! 2025";
+	
+	cout << "Before: " << str << endl;
+	
+	tripleDigit(str);
+	
+	cout << "After: " << str << endl;
+	
+	return 0;
+}
+
+// Con puntatori
+char *tripleDigit(char *const str) {
+	int len = strlen(str);
+	
+	for (char *j = str; j - str < len && len + 2 < SIZE - 1; j++) {
+		if (isdigit(*j)) {
+			if (len + 2 >= SIZE) break;
+			
+			memmove(j + 3, j + 1, len - (j - str) + 1);
+			
+			*(j + 1) = *j;
+			*(j + 2) = *j;
+			
+			len = len + 2;
+			j = j + 2;
+		}
+	}
+	
+	return str;
+}
+
+/* Senza puntatori
+char *tripleDigit(char *const str) {
+	int len = strlen(str);
+	
+	for (int j = 0; j < len && len + 2 < SIZE - 1; j++) {
+		if (isdigit(str[j])) {
+			if (len + 2 >= SIZE) break;
+			
+			for (int k = len; k >= j; k--) {
+				str[k + 2] = str[k];
+			}
+			
+			str[j + 1] = str[j];
+			str[j + 2] = str[j];
+			
+			len = len + 2;
+			j = j + 2;
+		}
+	}
+	
+	return str;
+}
+*/
\ No newline at end of file