codice:
#include <stdio.h>
size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
The function fread() reads nmemb elements of data, each size bytes
long, from the stream pointed to by stream, storing them at the loca-
tion given by ptr.
The function fwrite() writes nmemb elements of data, each size bytes
long, to the stream pointed to by stream, obtaining them from the loca-
tion given by ptr.
FILE *stream può essere stdin, stdout, stderr ma anche un file di testo.