Compilare: user.c: In function ‘precalc’: user.c:15:16: warning: unused variable ‘min’ [-Wunused-variable] int i, j, k, min, dq[MAXN], st, dr; ^ user.c: In function ‘main’: user.c:69:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d ", &n, &m, &q); ^ user.c:71:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(ma[i], MAXN + 2, in); ^ user.c:77:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d", &l, &c, &l1, &l2); ^