package main

import (
	"fmt"
	"runtime"
	"time"
)

func main() {
	fmt.Println("Shorter way for lots of if else")
	fmt.Println("No need to break after each statement")
	fmt.Println("switch cases need not be constants, and the values involved need not be integers.")

	os := runtime.GOOS

	switch os {
	case "windows":
		fmt.Println("You are using windows")
	case "linux":
		fmt.Println("You are using linux")
	default:
		fmt.Printf("You are using %s\n", os)
	}

	fmt.Println()

	fmt.Println("Also you can add short statement before condition too")
	// like: switch os := runtime.GOOS; os { . . . }

	fmt.Println()

	fmt.Println("You can use switch with no condition, this is same as `switch true`")
	t := time.Now()
	fmt.Println(t)
	switch {
	case t.Hour() < 12:
		fmt.Println("Good morning!")
	case t.Hour() < 17:
		fmt.Println("Good afternoon.")
	default:
		fmt.Println("Good evening.")
	}
}