Go tutorial entry, my first program

After installing the GO environment:

• A tool for editing code. Any text editor will do. Most text editors have good support for Go. The most popular are VSCode(free), GoLand (paid) and Vim (free).
• Command line terminal. Go runs properly on any terminal, such as Linux and Mac, as well as CMD on PowerShell or Windows.

Create a new file in your directory, main.go, and type the following code

package main

import "fmt"

func main(a) {
    fmt.Println("Hello, World!")}Copy the code

Package main: Declare a main package

Import “FMT” : references the popular FMT package that contains the ability to format text, including printing to the console. This package is a standard library package that is built into the Go installation

Func main() : Go program entry function, each program has a main function;

Run the following command

$ go run main.go  	
Copy the code

The output is as follows:

$ hello, world!
Copy the code