Program :

using System;

namespace AddTwoNumsUsingFunc
  class Program
    static void Main(string[] args)
      int x, y, result = 0;
      Console.WriteLine("*** *** ");
      Console.WriteLine(">>>C# PROGRAM TO ADD TWO NUMBERS USING METHOD <<< ");
      Console.Write("\n Enter the first number to be added: ");
      x = Convert.ToInt32(Console.ReadLine()); // taking x value from keyboard
      Console.Write("\n Enter the second number to be added: ");
      y = Convert.ToInt32(Console.ReadLine()); // taking y value from keyboard
      result = Sum(x, y); //calling function

      Console.WriteLine("\n The sum of two numbers is: {0} ", result); /*printing the sum.*/

    static public int Sum(int a, int b)
      int result = a + b;
      return result;
Sample Output :

Explanation :

In the above program the method static public int Add(int a,int b) , we are declaring method Sum method as Static because Main method is static and we are calling Sum method in Main method without creating object.

C# is a Object Oriented Programming Language. And in OOP language, a method can be called using object of a class. And if we want to call method without creating object, we have to declare it as static to Call it with its class name.

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