Compilare: user.c: In function ‘init’: user.c:11:9: warning: unused variable ‘m’ [-Wunused-variable] int m; ^ user.c: In function ‘main’: user.c:39:15: warning: unused variable ‘j’ [-Wunused-variable] int i, n, j; ^ user.c:40:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("schi.in", "r", stdin); ^ user.c:41:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("schi.out", "w", stdout); ^ user.c:42:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.c:43:23: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] FOR(i, 1, n) scanf("%d", s+i); ^