Method declaration and calling in C Sharp (C#) - Mini Project: Build & Apply

Method declaration and calling

📖 Scenario: You are creating a simple program to greet users by their name. This program will use a method to print a greeting message.

🎯 Goal: Build a C# program that declares a method called GreetUser which takes a string parameter name and prints a greeting message. Then call this method with a specific name.

📋 What You'll Learn

Declare a method named GreetUser that takes one string parameter called name.

Inside the method, print the message Hello, {name}! using the parameter.

Call the GreetUser method from the Main method with the argument "Alice".

💡 Why This Matters

🌍 Real World

Methods help organize code into reusable blocks, making programs easier to read and maintain.

💼 Career

Understanding method declaration and calling is essential for any software development job using C#.

1

Create the Main method and class

Create a class called Program and inside it create a Main method with the signature static void Main().

C Sharp (C#)

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

Need a hint?

The Main method is the starting point of a C# program.

2

Declare the GreetUser method

Inside the Program class but outside the Main method, declare a static method called GreetUser that takes a string parameter named name and returns void.

C Sharp (C#)

class Program
{
    static void Main()
    {
    }

    // Your code here
}

Need a hint?

Remember to place the method inside the class but outside the Main method.

3

Add greeting message inside GreetUser

Inside the GreetUser method, write a line to print the message Hello, {name}! using Console.WriteLine and string interpolation.

C Sharp (C#)

class Program
{
    static void Main()
    {
    }

    static void GreetUser(string name)
    {
        // Your code here
    }
}

Need a hint?

Use $"Hello, {name}!" inside Console.WriteLine to insert the name.

4

Call the GreetUser method from Main

Inside the Main method, call the GreetUser method with the argument "Alice".

C Sharp (C#)

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

    static void GreetUser(string name)
    {
        Console.WriteLine($"Hello, {name}!");
    }
}

Need a hint?

Call the method by writing GreetUser("Alice"); inside Main.