英文:
The number entered by the user is not being converted or interpreted as an integer in Go code
问题
我正在使用Visual Studio Code运行这段代码。
package main
import (
"bufio"
"fmt"
"math/rand"
"os"
"strconv"
"strings"
"time"
)
func main() {
min, max := 1, 100
rand.Seed(time.Now().UnixNano())
secretNumber := rand.Intn(max-min) + min
fmt.Println(secretNumber)
fmt.Println("猜一个1到100之间的数字")
fmt.Println("请输入你的猜测")
reader := bufio.NewReader(os.Stdin)
input, err := reader.ReadString('\n')
if err != nil {
fmt.Println("读取输入时发生错误，请重试", err)
return
}
input = strings.TrimSuffix(input, "\n")
guess, err := strconv.Atoi(input)
if err != nil {
fmt.Println("无效的输入，请输入一个整数值")
return
}
fmt.Println("你的猜测是", guess)
}
我从这个链接https://freshman.tech/golang-guess/复制了这段代码。当我在我的系统上运行这段代码时，在按下回车键输入数字后，代码生成了以下输出。
56
猜一个1到100之间的数字
请输入你的猜测
63
无效的输入，请输入一个整数值
有人可以指导我如何解决这个问题吗？
英文:
I am running this code in Visual studio code.
package main
import (
"bufio"
"fmt"
"math/rand"
"os"
"strconv"
"strings"
"time"
)
func main() {
min, max := 1, 100
rand.Seed(time.Now().UnixNano())
secretNumber := rand.Intn(max-min) + min
fmt.Println(secretNumber)
fmt.Println("Guess a number between 1 and 100")
fmt.Println("Please input your guess")
reader := bufio.NewReader(os.Stdin)
input, err := reader.ReadString('\n')
if err != nil {
fmt.Println("An error occured while reading input. Please try again", err)
return
}
input = strings.TrimSuffix(input, "\n")
guess, err := strconv.Atoi(input)
if err != nil {
fmt.Println("Invalid input. Please enter an integer value")
return
}
fmt.Println("Your guess is", guess)
}
I have copied this code from this link https://freshman.tech/golang-guess/ When I run this code on my system, after entering the number by hitting the enter key instead of printing the entered number my code is generating this output.
56
Guess a number between 1 and 100
Please input your guess
63
Invalid input. Please enter an integer value
Can anyone please guide me how to solve this problem.
答案1
得分: 1
你是在Windows上吗？我怀疑你的控制台在每行末尾给出的是\r\n，而不仅仅是\n。
你可以从字符串中删除所有空白字符...
不要使用这个：
input = strings.TrimSuffix(input, "\n")
而要使用这个：
input = strings.TrimSpace(input)
这将从字符串的开头和结尾删除空格，包括\r和\n。
英文:
Are you on Windows? I suspect your console is giving you \r\n at the end of each line, not just \n.
You can trim all whitespace from a string...
Instead of this:
input = strings.TrimSuffix(input, "\n")
Use this:
input = strings.TrimSpace(input)
This will trim space, including \r and \n, from both the beginning and end.
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