package main

import (
	"fmt"
	"math/cmplx"
)

var c, java, python bool
var n, m int = 1, 2
var (
	ToBe	bool		= false
	MaxInt	uint64		= 1<<64 - 1
	z		complex128	= cmplx.Sqrt(-5 + 12i)
)

func add(x, y int) int {
	return x + y
}

func swap (x, y string) (string, string) {
	return y, x
}

func split(sum int) (x, y int) {
	x = sum * 4 / 9
	y = sum - x
	return
}

func main() {
	fmt.Println(add(42,13))
	x := [3]int{2,1,1}
	fmt.Println(x)

	a, b := swap("hello", "go")
	fmt.Println(a, b)

	fmt.Println(split(17))

	var i int
	fmt.Println(i, c, python, java)

	c, java, python := true, true, "no!"
	k := 3
	fmt.Println(k, n, m, c, python, java)

	fmt.Printf("Type: %T Value: %v\n", ToBe, ToBe)
	fmt.Printf("Type: %T Value: %v\n", MaxInt, MaxInt)
	fmt.Printf("Type: %T Value: %v\n", z, z)

	g := 42
	f := float64(g)
	u := uint(f)
	fmt.Println(g, f, u)

	const Pi = 3.14
	const World = "世界"
	const Truth = true

	fmt.Println("Hello", World)
	fmt.Println("Happy", Pi, "Day")
	fmt.Println("Go rules?", Truth)
}