Use an Action to change the values : Array ForEach « Data Structure « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Data Structure
3. Array ForEach

using System;    
   
class MyClass { 
  public int i;  
   
  public MyClass(int x) { 
    i = x; 
  }
}
  
class MainClass {       
 
  static void neg(MyClass o) {  
    o.i = -o.i; 
  }  
  
  public static void Main() {       
    MyClass[] nums = new MyClass[5];  
  
    nums[0] = new MyClass(5);  
    nums[1] = new MyClass(2);  
    nums[2] = new MyClass(3);  
    nums[3] = new MyClass(4);  
    nums[4] = new MyClass(1);  
     
    // Use action to negate the values. 
    Array.ForEach(nums, MainClass.neg); 
 
  }       
}