Parameters and arguments in C Sharp (C#) - Mini Project: Build & Apply

Understanding Parameters and Arguments in C#

📖 Scenario: Imagine you are creating a simple calculator program that can add two numbers. To do this, you will write a method that takes two numbers as input and returns their sum.

🎯 Goal: Build a C# program with a method that uses parameters to receive two numbers and returns their sum. Then call this method with arguments and display the result.

📋 What You'll Learn

Create a method with two parameters of type int

Call the method with two integer arguments

Store the returned sum in a variable

Print the sum to the console

💡 Why This Matters

🌍 Real World

Methods with parameters let programs receive input values to perform tasks like calculations, data processing, or controlling devices.

💼 Career

Understanding parameters and arguments is essential for writing reusable code and working with functions or methods in any software development job.

1

Create a method with parameters

Write a method called AddNumbers that takes two int parameters named num1 and num2. The method should return an int.

C Sharp (C#)

// Your code here

Need a hint?

Define a method with static int AddNumbers(int num1, int num2) and return an integer value.

2

Add logic to return the sum

Inside the AddNumbers method, write code to return the sum of num1 and num2.

C Sharp (C#)

using System;

class Program
{
    static int AddNumbers(int num1, int num2)
    {
        // Your code here
    }

    static void Main()
    {
    }
}

Need a hint?

Use the return keyword followed by num1 + num2 to return their sum.

3

Call the method with arguments

In the Main method, call AddNumbers with arguments 5 and 7. Store the result in an int variable called result.

C Sharp (C#)

using System;

class Program
{
    static int AddNumbers(int num1, int num2)
    {
        return num1 + num2;
    }

    static void Main()
    {
        // Your code here
    }
}

Need a hint?

Call AddNumbers(5, 7) and assign it to int result.

4

Print the result

Add a Console.WriteLine statement in Main to print the value of result.

C Sharp (C#)

using System;

class Program
{
    static int AddNumbers(int num1, int num2)
    {
        return num1 + num2;
    }

    static void Main()
    {
        int result = AddNumbers(5, 7);
        // Your code here
    }
}

Need a hint?

Use Console.WriteLine(result); to display the sum.