Compilare: user.c: In function ‘main’: user.c:9:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &t); ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &n, &m, &x); ^ user.c:14:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &nr); ^ user.c:20:17: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] a = s - m - k + 1; ^