Compilare: user.c:9:13: warning: ‘comb’ defined but not used [-Wunused-function] static void comb(uint8_t l) ^ user.c: In function ‘main’: user.c:56:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("combinari.in", "r", stdin); ^ user.c:57:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("combinari.out", "w", stdout); ^ user.c:59:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%" SCNu8 "%" SCNu8, &n, &k); ^