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file/es1_binary.cpp

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+/*
+AUTORE: Manuel Vichi 3^AIN
+Esercizio 1 File Binari
+*/
+#include <iostream>
+#include <stdbool.h>
+using namespace std;
+int writeBinary(char * const fileName, size_t elements) {
+	FILE* file = fopen(fileName, "wb");
+	if (file == NULL) {
+		perror("Errore durante l'apertura del file di scrittura");
+		return -1;
+	} else {
+		int arr[elements];
+		for (size_t i = 0; i < elements; i++) {
+			arr[i] = i;
+		}
+		int count = sizeof(arr) / sizeof(arr[0]);
+		int written = fwrite(&arr, sizeof(int), count,file);
+		fclose(file);
+		return written;
+	}
+	return -1;
+}
+int main(void) {
+	char file1[] = "file_70.bin";
+	unsigned elements1 = 70;
+	char file2[] = "file_100.bin";
+	unsigned elements2 = 100;
+	char file3[] = "file_200.bin";
+	unsigned elements3 = 200;
+	printf("Dimensione del tipo int: %d\n",sizeof(int));
+	printf("Elementi scritti con successo (file %s): %d\n",file1,writeBinary(file1,elements1));
+	printf("Elementi scritti con successo (file %s): %d\n",file2,writeBinary(file2,elements2));
+	printf("Elementi scritti con successo (file %s): %d\n",file3,writeBinary(file3,elements3));
+	return 0;
+}