Eroare de compilare: user.c:52: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token user.c: In function ‘main’: user.c:84: warning: implicit declaration of function ‘gcd’ user.c:71: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:72: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:75: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:78: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result