PERROR(3) PERROR(3)
NAME
perror, sys_errlist, sys_nerr - system error messages
SYNOPSIS
perror(s)
char *s;
int sys_nerr;
char *sys_errlist[];
DESCRIPTION
Perror produces a short error message on the standard error
file describing the last error encountered during a call to
the system from a C program. First the argument string s is
printed, then a colon, then the message and a new-line. The
error number is taken from the external variable errno (see
intro(2)), which is changed only when errors occur.
Sys_errlist is a vector of message strings. Errno can be
used as an index in this table to get the message string
without the newline. Sys_nerr is the number of messages in
the table.
SEE ALSO
intro(2)