1 package main
 2
 3 import (
 4     "fmt"
 5     "math/rand"
 6     "time"
 7 )
 8
 9 func creatRandNum(p *int) {
10     // 设置随机种子
11     rand.Seed(time.Now().UnixNano())
12     var num int
13     for {
14         num = rand.Intn(10000) //一定是4位数
15         if num >= 1000 {
16             break
17         }
18     }
19     *p = num
20 }
21
22 func getNum(randSlice []int, randNum int) {
23     randSlice[0] = randNum / 1000
24     randSlice[1] = randNum % 1000 / 100
25     randSlice[2] = randNum % 100 / 10
26     randSlice[3] = randNum % 10
27 }
28
29 func onGame(randSlice []int) {
30     var keyNum int
31     keySlice := make([]int, 4)
32     for {
33         for {
34             fmt.Println("请输入4位数字：")
35             fmt.Scan(&keyNum)
36             if keyNum > 999 && keyNum < 10000 {
37                 break
38             }
39             fmt.Println("请输入正确的4位数字！")
40         }
41         fmt.Println("keyNum=", keyNum)
42         getNum(keySlice, keyNum)
43         fmt.Println("keySlice=", keySlice)
44         n := 0
45         for i := 0; i < 4; i++ {
46             if keySlice[i] > randSlice[i] {
47                 fmt.Printf("第%d位大了一点\n", i+1)
48             } else if keySlice[i] < randSlice[i] {
49                 fmt.Printf("第%d位小了一点\n", i+1)
50             } else {
51                 fmt.Printf("第%d位猜对了\n", i+1)
52                 n++
53             }
54         }
55         if n == 4 {
56             fmt.Println("全部才对，猜对数字为", keyNum)
57             break
58         }
59     }
60 }
61
62 func main() {
63     var randNum int
64
65     // 产生一个4位的随机数
66     creatRandNum(&randNum)
67     fmt.Println("randNum=", randNum)
68
69     randSlice := make([]int, 4)
70     //获取各位的数字
71     getNum(randSlice, randNum)
72     fmt.Println("randSlice=", randSlice)
73
74     onGame(randSlice)
75 }