main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import "fmt"
/*
~ TICTACTOE GAME IN GO ~
+ This example uses the very basics of the Go language.
+ The goal is learning all the basics.
*/
func main() {
var (
won bool
turn int
)
// VERSION 1
// const banner = " TIC~TAC~TOE"
// const board = `
// /---+---+---\
// | X | O | X |
// +---+---+---+
// | X | X | |
// +---+---+---+
// | O | O | O |
// \---+---+---/`
//
// const maxTurns = 9
// VERSION 2
// Benefit of constants:
// + Resolved to literals at compile-time
// + Fast at runtime
// + Provides overwriting unlike variables
// + Typeless: Can change type
const (
banner = `
TIC~TAC~TOE
/---+---+---\
| X | O | X |
+---+---+---+
| X | X | |
+---+---+---+
| O | O | O |
\---+---+---/`
maxTurns = 9
)
// Constants have default types
// 1 => int
// 1.5 => float64
// true => bool
// "hi" => string
// 'a' => rune
// You cannot assign to constants
// banner = "TIC TAC TOE"
// maxTurns = 10
// no need: float64(maxTurns) — constants are typeless (like basic literals)
// if maxTurns was `const maxTurns int`; then it'd be needed.
progress := (1 - (float64(turn) / maxTurns)) * 100
fmt.Println(banner)
// fmt.Println(board)
fmt.Println()
fmt.Printf("Current Turn : %d\n", turn)
fmt.Printf("Is there a winner : %t\n", won)
fmt.Printf("Turns left : %.1f%%\n", progress)
}
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