std::basic_ios::good
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   bool good() const;  | 
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Returns true if the the most recent I/O operation on the stream completed successfully. Specifically, returns result of rdstate() == 0.
| This section is incomplete Reason: difference between fail() and good()  | 
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
| ios_base::iostate flags | basic_ios accessors | |||||||
| eofbit | failbit | badbit | good() | fail() | bad() | eof() | operator bool() | operator!() | 
| false | false | false | true | false | false | false | true | false | 
| false | false | true | false | true | true | false | false | true | 
| false | true | false | false | true | false | false | false | true | 
| false | true | true | false | true | true | false | false | true | 
| true | false | false | false | false | false | true | true | false | 
| true | false | true | false | true | true | true | false | true | 
| true | true | false | false | true | false | true | false | true | 
| true | true | true | false | true | true | true | false | true |