Csharp/CSharp Tutorial/Data Type/byte overflow

byte overflow with unchecked

<source lang="csharp">using System; class MainClass {

 static void Main(string[] args)
 {
   Console.WriteLine("Working with unchecked code");
   try
   {
     unchecked
     {
       byte b5 = 100, b6 = 200;
       byte b4 = (byte)(b5 + b6);
       Console.WriteLine("b4 = {0}", b4);       
     }
   }
   catch(OverflowException e)
   { 
     Console.WriteLine(e.Message);
   }    
 }

}</source>

Working with unchecked code
b4 = 44

Catching an underflow

<source lang="csharp">using System; class MainClass {

 static void Main(string[] args)
 {
   Console.WriteLine("System.Byte stats:");
   Console.WriteLine("Max value of byte is {0}.", byte.MaxValue);
   Console.WriteLine("Min value of byte is {0}.", byte.MinValue);
   Console.WriteLine("Catching an underflow");
   try
   {
     byte a = 9, b = 9;
     byte c = (byte)(a + b + -100);
   }
   catch(OverflowException e){Console.WriteLine(e);}
 }

}</source>

System.Byte stats:
Max value of byte is 255.
Min value of byte is 0.
Catching an underflow