Uso del read(); in C [HELP]

[floyd]

#include <stdio.h>

main(int argc, char **argv)
{
char a[100];

FILE *stream;
if ((stream = fopen ("prova", "r")) == NULL)
exit(1);

while (fread(a, 1, 100, stream) !=0) {
printf("%s",a);
}

fclose(stream);
}

questo funziona