Golang Tutorial: Your First Program

Welcome to the Golang Tutorial! In this tutorial, we will be creating your very first program in Go.

Quick Start

Create a “Hello, World!” App

One of the easiest programs to create is a program that simply displays “Hello, World!” to the console. Here’s how you can create this program:

1. Create a new file called hello.go.
2. Copy the following code into the file:

package main

import "fmt"

func main() {
fmt.Println("Hello, World!")
}

The code above does the following: - The package main line tells Go that this is a main package and that it can be compiled into an executable program. - The import "fmt" line imports the fmt package, which provides functions for formatting and printing strings. - The func main() { ... } block is where the program starts. This is where you can write your code.

3. Save the file.

Run Your Program

Now that you’ve created your “Hello, World!” program, you can run it with the following steps:

1. Open a terminal or command prompt.
2. Navigate to the directory where your hello.go file is located.
3. Run the following command: go run hello.go.

You should see the message “Hello, World!” printed to the console.

Video Tutorial

Prefer watching a video? Check out this tutorial on YouTube:

Exercises

Now that you’ve created your first program, it’s time to practice with some exercises. Here are two exercises you can try:

1. Create a program that displays your name.
2. Create a program that displays your address.

Once you’re done, you can download the answers from this link.

Happy coding!