Compilare: user.c: In function ‘main’: user.c:13:17: warning: passing argument 1 of ‘fread’ makes pointer from integer without a cast [enabled by default] fread(p, sizeof(void), 1, fisierin); ^ In file included from /usr/include/stdio.h:934:0, from user.c:2: /usr/include/i386-linux-gnu/bits/stdio2.h:274:1: note: expected ‘void * restrict’ but argument is of type ‘int’ fread (void *__restrict __ptr, size_t __size, size_t __n, ^ user.c:39:5: warning: passing argument 1 of ‘fwrite’ makes pointer from integer without a cast [enabled by default] fwrite(rez, sizeof(void), 1, fisierout); ^ In file included from user.c:2:0: /usr/include/stdio.h:712:15: note: expected ‘const void * restrict’ but argument is of type ‘int’ extern size_t fwrite (__const void *__restrict __ptr, size_t __size, ^ user.c:13:22: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(p, sizeof(void), 1, fisierin); ^ user.c:13:22: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.c:39:11: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] fwrite(rez, sizeof(void), 1, fisierout); ^