Eroare de compilare: user.cpp: In function ‘int32_t main()’: user.cpp:22:17: error: ‘b’ was not declared in this scope rc((__gcd(a,b) == 1 ? 0 : __gcd(a,b))); ^ user.cpp:6:31: note: in definition of macro ‘rc’ # define rc(s) return cout << s,0 ^ user.cpp:19:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("adunare.in","r",stdin); ^ user.cpp:20:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("adunare.out","w",stdout); ^