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diff --git a/reference/C/EXAMPLES/swap.c b/reference/C/EXAMPLES/swap.c
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+++ b/reference/C/EXAMPLES/swap.c
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+/******************************************************************
+ *
+ * Purpose: Program to demonstrate the use of ^ (XOR).
+ * Date:    03-Dec-96
+ * Author:  M J Leslie.
+ * Descrip: The contents of two variables are swapped without
+ *          the use of a temorary variable  
+ *
+ ******************************************************************/
+
+#include <stdio.h>
+
+main()
+{
+
+  int    	One = 20;
+  int		Two = 12;
+
+  printf("One = %d Two = %d\n", One, Two);
+
+  One ^= Two;
+  Two ^= One;
+  One ^= Two;
+
+  printf("One = %d Two = %d\n", One, Two);
+}