std::basic_ios::good
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   bool good() const;  | 
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Returns true if the stream has no errors occurred and is ready of I/O operations. Specifically, returns result of rdstate() == 0.
Contents | 
[edit] Parameters
(none)
[edit] Return value
true if the stream has no errors occurred, false otherwise.
[edit] Example
| This section is incomplete Reason: no example  | 
[edit] See also
|    checks if a non-recoverable error has occurred  (public member function)  | |
|    checks if a recoverable error has occurred  (public member function)  | |
|    checks if end-of-file has been reached  (public member function)  | |
|    checks if an error has occurred (synonym of fail())  (public member function)  | |
|    (until C++11) (since C++11)  | 
  checks if no error has occurred (synonym of !fail())  (public member function)  |