75 lines
1.2 KiB
Go
75 lines
1.2 KiB
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"fmt"
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"math/rand"
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"os"
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"strconv"
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"time"
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)
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const (
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maxTurns = 5 // less is more difficult
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usage = `Welcome to the Lucky Number Game! 🍀
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The program will pick %d random numbers.
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Your mission is to guess one of those numbers.
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The greater your number is, harder it gets.
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Wanna play?
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`
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)
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func main() {
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rand.Seed(time.Now().UnixNano())
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args := os.Args[1:]
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if len(args) != 1 {
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fmt.Printf(usage, maxTurns)
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return
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}
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guess, err := strconv.Atoi(args[0])
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if err != nil {
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fmt.Println("Not a number.")
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return
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}
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if guess < 0 {
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fmt.Println("Please pick a positive number.")
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return
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}
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for turn := 1; turn <= maxTurns; turn++ {
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n := rand.Intn(guess + 1)
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// Better, why?
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//
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// Instead of nesting the if statement into
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// another if statement; it simply continues.
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//
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// TLDR: Avoid nested statements.
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if n != guess {
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continue
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}
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if turn == 1 {
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fmt.Println("🥇 FIRST TIME WINNER!!!")
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} else {
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fmt.Println("🎉 YOU WON!")
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}
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return
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}
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fmt.Println("☠️ YOU LOST... Try again?")
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}
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