perror

From cppreference.com
< c | io
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

[edit] See also

returns a text version of a given error code
(function)