Upload files to "array"

array/array_pari.cpp

@@ -0,0 +1,42 @@
+/*
+AUTHOR: Manuel Vichi
+The program asks in input 10 values, stores them in an array and then determines if all stored values are peer numbers or not.
+*/
+#include <iostream>
+#include <array>
+#include <vector>
+#include <cstdlib>
+#define ARRAY_SIZE 10 //The size of the integers' array
+using namespace std;
+//Check if a number is peer
+bool isPeer(int number) {
+	return number % 2 == 0;
+}
+
+//Print if all numbers on an array are peers or not
+void printIfPeersOnPeerPositions(int array[]) {
+	int array_size = sizeof(array) / sizeof(array[0]);
+	int number_peers = 0;
+	for (int i = 0; i < array_size; i++) {
+		if (isPeer(array[i])) {
+			number_peers++;
+		}
+		i++;	
+	}
+	if (number_peers == array_size)
+		cout << "All numbers you gave me are peers." << endl;
+	else
+		cout << "Not all numbers you gave me are peers." << endl;		
+}
+
+//Main function
+int main() {
+	int integers[ARRAY_SIZE];
+	for (int i = 0; i < ARRAY_SIZE; i++) {
+		cout << "Type a number and press enter (Remaining to type: " << ARRAY_SIZE - i - 1 << "). ";
+		cin >> integers[i];
+		cout << endl;
+	}
+	printIfPeersOnPeerPositions(integers);
+    return 0;
+}

array/media_variaz.cpp

@@ -0,0 +1,47 @@
+/*Dato in input un elenco di numeri casuali, determinare la media e la varianza.
+Suggerimento: sola lettura
+*/
+#include <iostream>
+#include <cstdlib>
+#include <ctime>
+using namespace std;
+
+#define NMAX 13
+
+void genera(int vett[], size_t n) {
+	srand(time(NULL));
+	for(size_t i = 0; i< n; ++i)
+		vett[i] = rand () % (100-10+1) + 10;
+}
+
+float media(int vett[], size_t n) {
+	int media2;
+	for (int i = 0; i <= n; i++)
+		media2 += vett[i];
+	media2/= n;
+	return media2;
+}
+
+float varianza(int vett[], size_t n) {
+	int varianza2;
+	int media2;
+	for (int i = 0; i <= n; i++)
+		media2 += vett[i];
+	media2/= n;
+	for (int i = 0; i <= n; i++)
+		varianza2 = varianza2 + (1 / n * ((vett[i] - media2) * (vett[i] - media2)));
+	return varianza2;
+}
+
+int main()
+{
+	int card;
+	cout << "Inserisci il numero di valori da memorizzare dentro l'array: ";
+	cin >> card;
+	cout << endl;
+	int vett[card];
+	genera(vett, card);
+	cout << "Media: " << media(vett, card) << endl;
+	cout << "Varianza: " << varianza(vett, card) << endl;
+	return 0;
+}