Compilare: user.c: In function ‘main’: user.c:96:10: warning: unused variable ‘last’ [-Wunused-variable] ll int last = query[M - 1].s; ^ user.c:66:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %d", &A, &B, &P, &M); ^ user.c:68:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %lld", &query[i].l, &query[i].s); ^ user.c:129:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secvente3.out", "w", stdout); ^