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Go Hello World

Our first program will print the classic “hello world” message. Here’s the full source code.

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

First, How to run Golang Program?

To run a Go program you need a Go compiler. In Go compiler, first you create a program and save your program with extension .go, for example, hello-world.go. Now we run this hello-world.go file in the go compiler using the following command:

$ go run hello-world.go

Code Example


package main
import "fmt"
func main() {
    fmt.Println("Hello World")
}

Output for above code


Hello World


In the above lines of code we have:

func: It is used to create a function in Go language.

main: It is the main function in Go language, which doesn’t contain the parameter, doesn’t return anything, and call when you execute your program. It represents an entry point for the program.

Println(): Println means Print line. This method is present in fmt package and it is used to display in this example “Hello World” string.

Conclusion

In this page (written and validated by ) you learned about Go Hello World . What's Next? If you are interested in completing Go tutorial, your next topic will be learning about: Go Comments.



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