syntax:

Clib.perror([errmsg])

where:

errmsg - a message to describe an error condition.

return:

string - error message that describes the error indicated by Clib.errno.

description:

Prints and returns an error message that describes the error defined by Clib.errno. This method is identical to calling Clib.strerror(Clib.errno). If a string variable is supplied it will be set to the string returned.

see:

Clib.ferror()