initial import

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*/