Error numbers
From cppreference.com
                    
                                        
                    
                    
                                                            
                    Each of the macros defined in <errno.h> expands to integer constant expressions with type int, each with a unique positive value. The following constants are defined (the implementation may define more, as long as they begin with 'E' followed by digits or uppercase letters)
| Defined in header <errno.h>  | |
| EDOM | Mathematics argument out of domain of function (macro constant) | 
| EILSEQ (C99) | Illegal byte sequence (macro constant) | 
| ERANGE | Result too large (macro constant) | 
[edit] Example
| This section is incomplete Reason: no example | 
[edit] See also
| macro which expands to POSIX-compatible thread-local error number variable (macro variable) | |
| displays a character string corresponding of the current error to stderr (function) | |
| returns a text version of a given error code (function) | |

