std::perror
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                    | Defined in header  <cstdio> | ||
| void perror( const char  *s ); | ||
Prints a textual description of the error code currently stored in the system variable errno to stderr.
The description is formed by concatenating the following components:
-  the contents of the null-terminated byte string pointed to by s(unlesssis a null pointer)
- ": "
-  implementation-defined error message describing the error code stored in errno. This message is identical to the output of std::strerror(errno).
- '\n'.
| Contents | 
[edit] Parameters
| s | - | pointer to a null-terminated string with explanatory message | 
[edit] Return value
(none)
[edit] Example
Run this code
Output:
log(-1) failed: Numerical argument out of domain
[edit] See also
| macro which expands to POSIX-compatible thread-local error number variable (macro variable) | |
| returns a text version of a given error code (function) | |
| C documentation for perror | |


