Compilare: user.c: In function ‘main’: user.c:37:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma.in","r",stdin); ^ user.c:38:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma.out","w",stdout); ^ user.c:39:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&v,&l,&c); ^ user.c:89:15: warning: ‘crez’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d\n%c\n",rezl,rezc,crez); ^