1 files changed, 44 insertions, 0 deletions
diff --git a/reference/C/EXAMPLES/and.c b/reference/C/EXAMPLES/and.c
new file mode 100644
index 0000000..5844f61
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+++ b/reference/C/EXAMPLES/and.c
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+/****************************************************************************
+ *
+ * Purpose: To show the effect of a bitwise AND (&) by converting 
+ * 	    an ASCII graphic extension into its character equivalent.
+ * Author:  M.J. Leslie.
+ * Date:    04-Mar-95
+ *
+ ****************************************************************************/
+
+main()
+{
+					/*
+					 * Hex E6 looks like this in binary
+					 *  
+					 * 1110 0110
+					 *  
+					 * UNSIGNED is used to stop C using    
+					 * first 1 as an indicator of the sign
+					 */
+    unsigned char value='\xE6';
+
+					/* Hex 7F looks like this in binary
+					 *
+					 * 0111 1111
+					 */
+
+    printf("%2X %2X \n", value, (value & '\x7F'));
+
+					/* A bitwise AND has the effect of 
+					 * filtering unwanted bits. 
+					 *
+					 * 1110 0110 (E6) AND
+					 * 0111 1111 (7F)
+					 * --------- 
+					 * 0110 0110 (66)
+					 */
+}
+/****************************************************************************
+ *
+ * Program results are:
+ *
+ *	E6 66
+ *
+ ****************************************************************************/