[Tutorial] Learning Golang with examples – Example 1: Hello World

Monday, 11/11/2019

Tram Ho

In the first program, we will print out the classic message: “Hello world”. This is the full source code:

package main

import "fmt"

func main() {
    fmt.Println("hello world")
}

package main

import "fmt"

func main() {

fmt.Println("hello world")

}

To run the program, write the code in the file hello-world.go and use go run.

$ go run hello-world.go
hello world

$ go run hello-world.go

hello world

Sometimes we want to build our program into a binary file. This can be done using go build.

$ go build hello-world.go
$ ls
hello-world    hello-world.go

$ go build hello-world.go

$ ls

hello-world hello-world.go

Then we run the file directly:

$ ./hello-world
hello world

$ ./hello-world

hello world

Now we can build and run a basic Go application. Learn more with the next examples.

The next example: Values

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Source : Viblo