Eroare de compilare: user.cpp: In member function ‘bool cmp::operator()(std::string, std::string) const’: user.cpp:46: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp: In function ‘int main()’: user.cpp:52: error: ‘stdin’ was not declared in this scope user.cpp:52: error: ‘freopen’ was not declared in this scope user.cpp:53: error: ‘stdout’ was not declared in this scope user.cpp:55: error: ‘scanf’ was not declared in this scope user.cpp:90: error: ‘printf’ was not declared in this scope