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diff --git a/659/CH4/EX4.2/exm4_2.sce b/659/CH4/EX4.2/exm4_2.sce
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+//                Example 4.2       
+// The program requests the user to enter a character and display a message on
+// the screen telling the user whether the character is an alphabet or digit,
+// or any other special character.
+
+disp("Press any key");
+character=scanf("%c");                      //Reading character
+if (isletter(character)) then               //Test for letter
+    disp("The character is a letter");
+    elseif (isdigit(character)) then        //Test for digit
+            disp("The character is a digit");
+        else
+            disp("The character is not alphanumeric");
+ end
+\ No newline at end of file