Eroare de compilare: user.c: In function ‘main’: user.c:28:18: error: called object ‘cmmdc’ is not a function or function pointer cmmdc = cmmdc(a, b); ^ user.c:22:12: note: declared here int a, b, cmmdc; ^ user.c:23:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc.in", "r", stdin); ^ user.c:24:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc.out", "w", stdout); ^ user.c:26:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^