Compilare: user.c: In function ‘main’: user.c:44:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.in","r",stdin); ^ user.c:45:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.out","w",stdout); ^ user.c:46:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&q,&n,&m); ^ user.c:109:5: warning: ‘cc’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d\n%c",ii,jj,cc); ^