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C# - Implement Method Overloading Based on Number of Arguments

Here, we are going to learn how to implement method overloading based on number of arguments using C# program?
Submitted by Nidhi, on November 09, 2020 [Last updated : March 22, 2023]

Method Overloading

Method overloading is the type of static polymorphism, we can create multiple methods with the same name using method overloading.

Here, we will overload the Sum() method based on the number of arguments.

C# program to implement method overloading based on number of arguments

The source code to demonstrate method overloading based on the number of arguments is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# program to demonstrate method overloading based 
//on the number of arguments

using System;

class MethodOver
{
    static int Sum(int a, int b)
    {
        int r = 0;

        r = a + b;
        return r;
    }

    static int Sum(int a, int b, int c)
    {
        int r = 0;

        r = a + b + c;
        return r;
    }

    static int Sum(int a, int b, int c, int d)
    {
        int r = 0;

        r = a + b + c+ d;
        return r;
    }

    static void Main(string[] args)
    {
        int result = 0;

        result = Sum(10, 20);
        Console.WriteLine("Sum : " + result);

        result = Sum(10, 20,30);
        Console.WriteLine("Sum : " + result);

        result = Sum(10, 20,30,40);
        Console.WriteLine("Sum : " + result);
    }
}

Output

Sum : 30
Sum : 60
Sum : 100
Press any key to continue . . .

Explanation

In the above program, we created a class MethodOver, here we overloaded the sum() method based on the number of arguments to calculate the sum of given arguments.

Here, we created the three methods to calculate the sum of given arguments and return the result to the calling method.

Now look to the Main() method. Here, we created the local variable result and then called each overloaded method one by one and printed the result on the console screen.

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