#include <stdio.h>
#include <stdlib.h>

int main()
{

   FILE * f = fopen("prova.txt","w");

   int a = 5;

    a = fwrite(&a, sizeof(int), 1, f);

    if (a !=1 ){
        perror("write");
        exit(EXIT_FAILURE);

    }

    char *ciao="ciao!";

    a = fwrite(ciao, sizeof(char), 5 , f);

    if (a !=5 ){
        perror("write");
        exit(EXIT_FAILURE);

    }

   a = 7;

    a = fwrite(&a, sizeof(int), 1, f);

    if (a !=1 ){
        perror("write");
        exit(EXIT_FAILURE);

    }

    ciao="settete";

    a = fwrite(ciao, sizeof(char), 7 , f);

    if (a !=7 ){
        perror("write");
        exit(EXIT_FAILURE);

    }

   a = 3;

    a = fwrite(&a, sizeof(int), 1, f);

    if (a !=1 ){
        perror("write");
        exit(EXIT_FAILURE);

    }

    ciao="bam";

    a = fwrite(ciao, sizeof(char), 3 , f);

    if (a !=3 ){
        perror("write");
        exit(EXIT_FAILURE);

    }

    exit(EXIT_SUCCESS);


}