Go program structure

So now I want to talk about structure of Go programm.

Every program must start from the package name. Your first program was starting from the main package, and it was

package main

Name of the package can be different.

Than, if you need, you should import some packages, for exapmle "fmt" or "math". In "Hello world!" prog we import fmt package, because we need the Printf function, which is in these (fmt) package. Full list of packages and functions, which they have you can see on the home page of the Go language: link. It's not an mandatory part, but in more then 90% you need to export some standart packages.

Next is the program code. You can first define vars with

var name = 1
var name1 = 2*60

or something like that. Then goes functions part. The main function is "main", so if you write

func main() {
fmt.Printf("Hi! \n")
}

it will write "Hi!". Also you can write other functions:

package main


import "fmt"
var a = 1
var text string

func list() {
fmt.Printf("Hi!!!!! \n")
}

func main() {
list()

}

That's all for now. Next we'll see how to write Fibonacci number program, which is homework for lesson 1