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<TITLE>perror</TITLE>
<body bgcolor="#ffffcc">
<hr>
<pre>
<h3>PERROR(3) Library functions PERROR(3)
</h3>
<h3>NAME
</h3> perror - print a system error message
<h3>SYNOPSIS
</h3> #include <stdio.h>
void perror(const char *s);
<h3>DESCRIPTION
</h3> 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.
<h3>CONFORMING TO
</h3> ANSI C, POSIX
</pre>
<hr>
<h3>SEE ALSO
</h3><p>
<a href=errno.htm>errno</a>,
<a href=strerror.htm>strerror</a>,
<pre>
March 16, 1995 1
</pre>
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