Solution: One-dimensional spacefight - allow x

---

examples/game3/game3.go

package main

import (
    "bufio"
    "fmt"
    "math/rand"
    "os"
    "strconv"
    "strings"
    "time"
)

func main() {
    fmt.Println("Welcome to the game!")

    reader := bufio.NewReader(os.Stdin)

    rand.Seed(time.Now().UnixNano())
    var hidden = rand.Intn(20)
    //fmt.Println(hidden)
    for {
        fmt.Print("Your guess: ")
        var input string
        var err error
        input, err = reader.ReadString('\n')
        if err != nil {
            fmt.Println(err)
            os.Exit(1)
        }
        fmt.Println(input)
        input = strings.TrimSuffix(input, "\n")
        if input == "x" {
            fmt.Println("Good bye!")
            break
        }

        var guess int
        guess, err = strconv.Atoi(input)
        if err != nil {
            fmt.Println(err)
            fmt.Print("Try again!")
            continue
        }
        fmt.Println(guess)
        if guess < hidden {
            fmt.Println("Too small")
        } else if guess > hidden {
            fmt.Println("Too big")
        } else {
            fmt.Println("Direct hit!")
            break
        }
    }
}

examples/game4/game4.go

package main

import (
    "bufio"
    "fmt"
    "math/rand"
    "os"
    "strconv"
    "strings"
    "time"
)

func main() {
    fmt.Println("Welcome to the game!")

    reader := bufio.NewReader(os.Stdin)

    rand.Seed(time.Now().UnixNano())
    var hidden = rand.Intn(20)
    //fmt.Println(hidden)
    for {
        fmt.Print("Your guess: ")
        var input string
        var err error
        input, err = reader.ReadString('\n')
        if err != nil {
            fmt.Println(err)
            os.Exit(1)
        }
        fmt.Println(input)
        input = strings.TrimSuffix(input, "\n")
        if input == "x" {
            fmt.Println("Good bye!")
            break
        }
        if input == "p" {
            fmt.Printf("The hidden number is %d\n", hidden)
            continue
        }

        var guess int
        guess, err = strconv.Atoi(input)
        if err != nil {
            fmt.Println(err)
            fmt.Print("Try again!")
            continue
        }
        fmt.Println(guess)
        if guess < hidden {
            fmt.Println("Too small")
        } else if guess > hidden {
            fmt.Println("Too big")
        } else {
            fmt.Println("Direct hit!")
            break
        }
    }
}