1 files changed, 43 insertions, 0 deletions
diff --git a/reference/C/EXAMPLES/varlist.c b/reference/C/EXAMPLES/varlist.c
new file mode 100644
index 0000000..5b6360b
--- /dev/null
+++ b/reference/C/EXAMPLES/varlist.c
@@ -0,0 +1,43 @@
+/************************************************************************
+ *
+ * Purpose: To show ... in action. This operator (?) allows us to pass
+ *	    a variable number of parameters to a function, 'printf' 
+ *	    uses ...
+ * Author:  M.J. Leslie
+ * Date:    09-Jul-94
+ *
+ ************************************************************************/
+
+#include <stdio.h>
+#include <stdarg.h>			/* va_list, va_arg, va_end	*/
+
+int set(char *item, int, num, ...);
+
+/************************************************************************/
+
+main()
+   {
+   char *item="pear";
+
+   (set (item,4, "apple", "pear", "banana", "grape") )
+	? printf ("%s found\n", item) : printf("%s not found\n", item);
+
+   }
+
+/************************************************************************/
+
+int set(char *item, int num, ...)
+   {
+   va_list ap;				/* define 'ap' It acts as a pointer 
+					 * to the undefined variables.	*/
+   int ok=0;
+   int inc=0;
+   va_start(ap, num);			/* seed 'ap'			*/
+
+   do {
+      if ( item == va_arg(ap, char *)) ok=1;
+      } while ( ok==0 && ++inc < num);
+
+   va_end(ap);				/* tidy up.			*/
+   return (ok);
+   }