Let’s see how to write a simple Hello World program in golang. Create a file with an extension .go. Let’s name this file helloworld.go. Below will be the contents of the file.
package main
import "fmt"
func main() {
fmt.Println("Hello World")
}Some points to note about above program
- Every go file starts with a package name. In the above case it is package main
- Only main package is executable.
- The main package will contain a main function that denotes the start of a program
- We are using the Println function of fmt package to print the Hello World string
fmt.Println("Hello World")Let’s run this file now. For running, go to the directory which contains this file. Type below command to run the file. What this command will do is compile the go file and immediately run it.
go run helloworld.goOutput
Hello World