Compilare: user.c: In function ‘main’: user.c:9:40: warning: variable ‘end’ set but not used [-Wunused-but-set-variable] int v[MaxN], N, lung, max, i, start, end; ^ user.c:9:33: warning: variable ‘start’ set but not used [-Wunused-but-set-variable] int v[MaxN], N, lung, max, i, start, end; ^ user.c:6:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv1.in", "r", stdin); ^ user.c:7:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv1.out", "w", stdout); ^ user.c:10:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.c:12:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^