perror

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    PERROR(3)               Library functions               PERROR(3)

    NAME
           perror - print a system error message

    SYNOPSIS
           #include <stdio.h>

           void perror(const char *s);

    DESCRIPTION
           perror  produces  a  message on the standard error output,
           describing the last error encountered during a call  to  a
           system  or  library  function.   The  argument string s is
           printed first, then a colon and a blank, then the  message
           and  a  new-line.   To be of most use, the argument string
           should include the name of the program that  incurred  the
           error.   The error number is taken from the external vari-
           able errno, which is set when errors occur but not cleared
           when non-erroneous calls are made.

    CONFORMING TO
           ANSI C, POSIX

### SEE ALSO

errno, strerror,

                              March 16, 1995                        1

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