Block scope. : Variable Scope « Language Basics « C# / CSharp Tutorial

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C# / CSharp Tutorial » Language Basics » Variable Scope 
1.10.2.Block scope.
using System; 
 
class Example 
  public static void Main() { 
    int x; // known to all code within Main() 
 
    x = 10
    if(x == 10) { // start new scope
      int y = 20// known only to this block 
 
      // x and y both known here. 
      Console.WriteLine("x and y: " + x + " " + y)
    
    // y = 100; // Error! y not known here  
 
    // x is still known here. 
    Console.WriteLine("x is " + x)
  
}
x and y: 10 20
x is 10
1.10.Variable Scope
1.10.1.The Scope and Lifetime of Variables
1.10.2.Block scope.
1.10.3.Lifetime of a variable.
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