Eroare de compilare: user.c:7: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token user.c:18: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token user.c: In function ‘main’: user.c:47: warning: implicit declaration of function ‘succ’ user.c:49: warning: implicit declaration of function ‘valid’ user.c:35: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:36: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:37: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:38: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result