package main
import (
    "bufio"
    "fmt"
    "math/rand"
    "os"
    "strconv"
    "time"
)
var (
    endNum int //設(shè)置生成數(shù)的范圍
)
func main() {
    i := createRandomNumber(endNum)
    //fmt.Println("生成規(guī)定范圍內(nèi)的整數(shù):", i)    //本句調(diào)試用
    fmt.Println("請(qǐng)輸入整數(shù),范圍為:0-", endNum)
    flag := true
    reader := bufio.NewReader(os.Stdin)
    for flag {
        data, _, _ := reader.ReadLine()
        command, err := strconv.Atoi(string(data)) //string to int,并作輸入格式判斷
        if err != nil {
            fmt.Println("格式不對(duì)，請(qǐng)輸入數(shù)字")
        } else {
            fmt.Println("你輸入的數(shù)字:", command)
            if command == i {
                flag = false
                fmt.Println("恭喜你，答對(duì)了~")
            } else if command < i {
                fmt.Println("你輸入的數(shù)字小于生成的數(shù)字，別灰心！再來(lái)一次~")
            } else if command > i {
                fmt.Println("你輸入的數(shù)字大于生成的數(shù)字，別灰心！再來(lái)一次~")
            }
        }
    }
}
func init() {
    endNum = 10
}
//生成規(guī)定范圍內(nèi)的整數(shù)
//設(shè)置起始數(shù)字范圍，0開(kāi)始,endNum截止
func createRandomNumber(endNum int) int {
    r := rand.New(rand.NewSource(time.Now().UnixNano()))
    return r.Intn(endNum)
}