0.Lets Start With First Hello world - Programming in GO

0.Lets Start With First Hello world - Go Program

package main

import "fmt"

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

A complete program is created by linking a single, unimported package called the main package with all the packages it imports, transitively. The main package must have package name main and declare a function main that takes no arguments and returns no value.

func main() { … }

Program execution begins by initializing the main package and then invoking the function main. When that function invocation returns, the program exits. It does not wait for other (non-main) goroutines to complete.

Go: Meaning of the ‘fmt’ package acronym

fmt is short for format.

Package fmt implements formatted I/O with functions analogous to C’s printf and scanf. The format ‘verbs’ are derived from C’s but are simpler.