perror
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <stdio.h> | ||
| void perror( const char *s ); | ||
Prints to stderr the contents of the null-terminated character string pointed to by s (unless s is a null pointer), followed by the two characters ": ", followed by the implementation-defined error message describing the error code currently stored in the system variable errno (identical to the output of strerror(errno)), followed by '\n'.
| Contents | 
[edit] Parameters
| s | - | pointer to a null-terminated string with explanatory message | 
[edit] Return value
(none)
[edit] Example
Run this code
Output:
open(): No such file or directory
[edit] References
- C11 standard (ISO/IEC 9899:2011):
- 7.21.10.4 The perror function (p: 339)
 
- C99 standard (ISO/IEC 9899:1999):
- 7.19.10.4 The perror function (p: 305)
 
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.9.10.4 The perror function
 
[edit] See also
| (C11)(C11) | returns a text version of a given error code (function) | 
| C++ documentation for perror | |


