C# 0 The Complete Reference

PART I

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PART IPART I

    byte result;

    a = 127;

    b = 127;

    try {

      result = unchecked((byte)(a * b));

      Console.WriteLine("Unchecked result: " + result);

      result = checked((byte)(a * b)); // this causes exception

      Console.WriteLine("Checked result: " + result); // won't execute

    }

    catch (OverflowException exc) {

      Console.WriteLine(exc);

    }

  }

}

The output from the program is shown here:

Unchecked result: 1

System.OverflowException: Arithmetic operation resulted in an overflow.

   at CheckedDemo.Main()

As is evident, the unchecked expression resulted in a truncation. The checked expression 

caused an exception.

The preceding program demonstrated the use of