1: /* $Header: usage.c,v 1.2 85/03/27 07:24:08 nicklin Exp $ */
2:
3: /*
4: * Author: Peter J. Nicklin
5: */
6:
7: /*
8: * usage() places a usage error message on the standard error
9: * output stream stderr.
10: */
11: #include <stdio.h>
12: #include "null.h"
13:
14: extern char *PGN; /* program name */
15:
16: usage(m)
17: char *m; /* usage error message */
18: {
19: fprintf(stderr, "usage: ");
20: if (PGN != NULL && *PGN != '\0')
21: fprintf(stderr, "%s ", PGN);
22: fprintf(stderr, "%s\n", m);
23: }
Defined functions
usage
defined in line
16; used 1 times