Compilare: user.c: In function ‘ok’: user.c:33:5: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset( f, 0, sizeof( f ) / sizeof( int ) ); ^ user.c:33:5: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default] user.c: In function ‘main’: user.c:52:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &p, &n, &k ); ^ user.c:54:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &a[i] ); ^