How to write my first program in Go

Writing a "Hello World" program is a traditional way to start with a new programming language. Here's how you can write and run a "Hello World" program in Go:

1. Installation
   If you haven't installed Go (often referred to as "Golang"), visit the official Go website for installation instructions: https://golang.org/doc/install

2. Writing the Code
   Create a new file called hello.go using your favorite text editor and enter the following code:

   package main

   import "fmt"

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

1. Explanation:

   • package main: This defines the package name of your program. Every Go executable program starts with the main package.

   • import "fmt": This includes the fmt package, which contains functions for formatting and printing strings.

   • func main(): The main() function is the entry point of the program. When you run the program, this is the first function that gets executed.

2. Running the Code:
   Navigate to the directory containing your hello.go file in your terminal or command prompt, then type the following command:

   go run hello.go

After running the above command, you should see the output:

   Hello, world!

1. Building the Code (Optional): If you want to compile the code into a binary instead of just running it, you can use the following command:

   go build hello.go

This will produce an executable in the current directory (e.g., hello.exe on Windows or just hello on macOS/Linux). You can then run this executable directly to see the output.

Congratulations! You've just written and run your first program in Go.

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