go language to guess the number of small game method

The example of this article describes the go language to achieve the number of guessing game method. Share with you for your reference. The specific analysis is as follows:

Randomly generate 1 number, input 1 number to see if it is matched, matching will be the knot speed, otherwise it will indicate whether it is larger or smaller

package main

import (

    "bufio"

    "fmt"

    "math/rand"

    "os"

    "strconv"

    "time"

)

var (

    endNum int // Sets the range of the generated number 

)

func main() {

    i := createRandomNumber(endNum)

    //fmt.Println(" Generates an integer in the specified range :", i)    // This sentence is used for debugging 

    fmt.Println(" Please enter an integer , The range of :0-", endNum)

    flag := true

    reader := bufio.NewReader(os.Stdin)

    for flag {

        data, _, _ := reader.ReadLine()

        command, err := strconv.Atoi(string(data)) //string to int, And make input format judgment 

        if err != nil {

            fmt.Println(" Incorrect format, please enter a number ")

        } else {

            fmt.Println(" The number you entered :", command)

            if command == i {

                flag = false

                fmt.Println(" Congratulations, that's right ~")

            } else if command < i {

                fmt.Println(" The number you entered is smaller than the number generated. Don't despair! Come again 1 time ~")

            } else if command > i {

                fmt.Println(" The number you entered is greater than the number generated. Don't despair! Come again 1 time ~")

            }

        }

    }

}

func init() {

    endNum = 10

}

// Generates an integer in the specified range 

// Set the starting number range, 0 start ,endNum As of 

func createRandomNumber(endNum int) int {

    r := rand.New(rand.NewSource(time.Now().UnixNano()))

    return r.Intn(endNum)

}

I hope this article has been helpful to your programming of Go language.