Compilare: user.c:5:54: warning: built-in function ‘log’ declared as non-function [enabled by default] int t, m, n, a[MAX][MAX], rmq[10][MAX], b[MAX][MAX], log[MAX]; ^ user.c: In function ‘main’: user.c:22:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("euclid.in", "r", stdin); ^ user.c:23:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("euclid.out", "w'", stdout); ^ user.c:24:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.c:27:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &m, &n, &h, &w); ^ user.c:33:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^