猜数字

package main

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

func main() {
    randNum := creatRandNum()
    randSlice := make([]int, 4)
    inputSlice := make([]int, 4)
    famtterNum(randSlice, randNum)
    fmt.Println(randNum) //打印随机数

    var inputNum int
    for true {
        fmt.Println("请输入一个四位数：")
        fmt.Scan(&inputNum)
        if inputNum > 999 && inputNum < 10000 {
            famtterNum(inputSlice, inputNum)
            for i := 0; i < 4; i++ {
                if randSlice[i] > inputSlice[i] {
                    fmt.Printf("第%d数字小了\n", i+1)
                } else if randSlice[i] < inputSlice[i] {
                    fmt.Printf("第%d数字大了\n", i+1)
                } else {
                    fmt.Printf("第%d数字猜对了\n", i+1)
                }
            }
        }
    }
}

//生成随机数
func creatRandNum() int {
    rand.Seed(time.Now().Unix())
    var num int
    for true {
        num = rand.Intn(10000)
        if num > 999 && num < 10000 {
            break
        }
    }
    return num
}

//将随机数存到切片中
func famtterNum(numSlice []int, num int) {
    numSlice[0] = num / 1000
    numSlice[1] = num % 1000 / 100
    numSlice[2] = num % 100 / 10
    numSlice[3] = num % 10
}

 

来源：https://www.cnblogs.com/mask-fan/p/9912473.html