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Scope of variables in C#

王林
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2023-09-19 15:37:02810browse

C# 中变量的作用域

The scope of a variable refers to the code area where the variable is accessed.

For a variable, it has the following levels:

Method level

Variables declared within a method are local variables.

Class level

Variables declared within a class are local variables and class member variables.

Let’s look at an example of variable scope:

Example

Real-time demonstration

using System;

namespace Demo {
   class Program {
      public int Divide(int num1, int num2) {
         // local variable in a method
         int result;
         result = num1 / num2;
         return result;
      }
      static void Main(string[] args) {
         // local variable
         int a = 150;
         int b = 10;
         int res;
         Program p = new Program();
         res = p.Divide(a, b);
         Console.WriteLine("Division Result = {0}", res );
         Console.ReadLine();
      }
   }
}

Output

Division Result = 15

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