guess.go

package main

import (
	"fmt"
	"math/rand"
	"strconv"
)

func main() {
	fmt.Println("guessのgoバージョン")

	var i string
	var in string
	var wallet int
	wallet = 50000
	for {
		fmt.Printf("how stakes (コイン)\n>")
		fmt.Scan(&in)
		stakes, _ := strconv.Atoi(in)
		mon, _ := strconv.Atoi(fmt.Sprintf("%.0f", float64(stakes)*0.15))
		mon = mon * 10
		fmt.Printf("guess number!\n>")
		fmt.Scan(&i)
		n := strconv.Itoa(rand.Intn(3) + 1)
		if n == i {
			fmt.Println(mon, "コイン儲かった!")
			wallet += mon
		} else {
			fmt.Println(mon, "コイン損した...")
			wallet -= mon
		}
		fmt.Println(wallet, "コイン")
	}
}