Writing first Go program - Mini Project: Build & Apply

Writing first Go program

📖 Scenario: You want to create a simple Go program that prints a friendly greeting to the screen. This is like saying hello to a new friend using code.

🎯 Goal: Build a Go program that prints the message Hello, Go! to the console.

📋 What You'll Learn

Create a main package

Write a main function

Use fmt.Println to print the greeting

Print exactly Hello, Go!

💡 Why This Matters

🌍 Real World

Every Go program starts with this structure. Printing messages helps you check your program works.

💼 Career

Knowing how to write a basic Go program is essential for software development jobs using Go.

1

Create the main package

Write package main at the top of your Go file to define the package.

Go

package main

// Your code here

Need a hint?

Every Go program starts with a package declaration. Use package main for executable programs.

2

Add the main function

Write a func main() function below the package line to start your program.

Go

package main

func main() {
    // Your code here
}

Need a hint?

The main function is where your program begins running.

3

Import the fmt package

Add an import statement to include the fmt package above the main function.

Go

package main

import "fmt"

func main() {
    // Your code here
}

Need a hint?

The fmt package lets you print text to the screen.

4

Print the greeting message

Inside the main function, write fmt.Println("Hello, Go!") to print the greeting.

Go

package main

import "fmt"

func main() {
    // Your code here
}

Need a hint?

Use fmt.Println with the exact text Hello, Go! inside quotes.