package main

import "fmt"

func main() {
	fmt.Println("Hello, world")
	fmt.Println(a, b, PI)
	arr[3] = 4
	fmt.Println(arr)
	fmt.Println(m)
}

var a int = 10
var b = 20

// d := 30
const PI = 3.14

var arr = [4]int{1,2,3}

// var arr = {1,3,4,5}
var m = map[string]int{
	"apple": 1,
	"banana": 2,
	"cherry": 3,
}