Eroare de compilare: user.c: In function ‘lgput’: user.c:21:30: error: ‘r’ undeclared (first use in this function) return l * l % mod * r % mod; ^ user.c:21:30: note: each undeclared identifier is reported only once for each function it appears in user.c: In function ‘main’: user.c:29:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(IN, "r", stdin); ^ user.c:30:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(OUT, "w", stdout); ^ user.c:32:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu %llu", &n, &p); ^