How does golang run? Detailed explanation of steps

Golang is a programming language also known as Go. It is an open source language developed by Google and released in 2009. Golang has higher compilation speed and higher efficiency compared to other programming languages. The following are the steps to run Golang:

1. Install Golang

Installing Golang is the first step to start learning Golang. You can download the Golang installer from the official website and follow the installation wizard to complete the installation. When the installation is complete, you can open the terminal and enter the following command to verify whether the installation is successful:

$ go version

If version information similar to "go version go1.16 darwin/amd64" appears, Golang has been successfully installed. .

2. Write Golang code

Open your favorite text editor, such as Visual Studio Code, Sublime, etc., and create a new file. Then add the following code to the file:

package main

import "fmt"

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

This is a simple Hello World program that can output a string. In Golang, all source files must belong to a package. The main package is the entry point of the Golang program.

3. Run the code

Once you have written the Golang code, you can run it. In the command line window, find the directory where the code file you wrote is located and enter the following command:

$ go run 文件名.go

For example, if you saved the file as "hello.go", then you can enter the following command:

$ go run hello.go

When you press Enter, your Golang program will compile and run.

4. Build the code

If you want to compile the Golang code into an executable file instead of running the source code file every time, then you need to build the code. In the terminal, navigate to the directory where your source code files are located and execute the following command:

$ go build 文件名.go

This will use the Go compiler to compile the code files into an executable file. If you saved the file as "hello.go", enter the following command:

$ go build hello.go

This will generate an executable file named "hello".

5. Running an executable file

Running an executable file is similar to running a source code file. In the command line window, navigate to the directory of the executable file and enter the following command:

$ ./可执行文件名

For example, if the executable file is named "hello", enter the following command:

$ ./hello

Your Golang program will output "Hello, World!".

Summary

Golang is an efficient programming language suitable for various development tasks. Installing Golang, writing code, running and building the code are the basic steps for using Golang. If you want to start learning Golang, these steps will be your starting point.

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