mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 19:30:10 +00:00
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/* Example of Parsing Arguments with getopt.
|
|
Copyright (C) 1991-2013 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*@group*/
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
int aflag = 0;
|
|
int bflag = 0;
|
|
char *cvalue = NULL;
|
|
int index;
|
|
int c;
|
|
|
|
opterr = 0;
|
|
/*@end group*/
|
|
|
|
/*@group*/
|
|
while ((c = getopt (argc, argv, "abc:")) != -1)
|
|
switch (c)
|
|
{
|
|
case 'a':
|
|
aflag = 1;
|
|
break;
|
|
case 'b':
|
|
bflag = 1;
|
|
break;
|
|
case 'c':
|
|
cvalue = optarg;
|
|
break;
|
|
case '?':
|
|
if (optopt == 'c')
|
|
fprintf (stderr, "Option -%c requires an argument.\n", optopt);
|
|
else if (isprint (optopt))
|
|
fprintf (stderr, "Unknown option `-%c'.\n", optopt);
|
|
else
|
|
fprintf (stderr,
|
|
"Unknown option character `\\x%x'.\n",
|
|
optopt);
|
|
return 1;
|
|
default:
|
|
abort ();
|
|
}
|
|
/*@end group*/
|
|
|
|
/*@group*/
|
|
printf ("aflag = %d, bflag = %d, cvalue = %s\n",
|
|
aflag, bflag, cvalue);
|
|
|
|
for (index = optind; index < argc; index++)
|
|
printf ("Non-option argument %s\n", argv[index]);
|
|
return 0;
|
|
}
|
|
/*@end group*/
|