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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /manual/examples/testopt.c
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initial import
Diffstat (limited to 'manual/examples/testopt.c')
-rw-r--r--manual/examples/testopt.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/manual/examples/testopt.c b/manual/examples/testopt.c
new file mode 100644
index 0000000..8ebc9b6
--- /dev/null
+++ b/manual/examples/testopt.c
@@ -0,0 +1,50 @@
+/*@group*/
+#include <unistd.h>
+#include <stdio.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 (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*/