Eroare de compilare: user.c: In function ‘main’: user.c:14:20: error: ‘v’ undeclared (first use in this function) scanf("%d %d",&v,&n); ^ user.c:14:20: note: each undeclared identifier is reported only once for each function it appears in user.c:14:23: error: ‘n’ undeclared (first use in this function) scanf("%d %d",&v,&n); ^ user.c:17:9: error: ‘i’ undeclared (first use in this function) for(i=0;i<v;i++){ ^ user.c:18:13: error: ‘j’ undeclared (first use in this function) for(j=0;j<n;j++){ ^ user.c:23:17: error: ‘m’ undeclared (first use in this function) scanf("%d",&m); ^ user.c:11:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("note.in","r",stdin); ^ user.c:12:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("note.out","w",stdout); ^