小编rus*_*ian的帖子

我刚开始尝试 Rust，所以我实现了 Book 的“猜谜游戏”的修改版本。每次我尝试输入数字时，程序都无法从字符串解析整数：

Guess the number!
Input your guess:
50
You guessed 50
 (4 bytes)!
thread 'main' panicked at 'Wrong number format!: ParseIntError { kind: InvalidDigit }', src\libcore\result.rs:997:5
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
error: process didn't exit successfully: `target\release\experiment.exe` (exit code: 101)

下面应用了代码。

我已经尝试过其他整数类型。

use std::io;
use rand::Rng;

fn main() {
    println!("Guess the number!\nInput your guess:");

    let mut guess = String::new();

    let secnum = rand::thread_rng().gen_range(1,101);

    'br: loop { 
        match io::stdin().read_line(&mut guess) {
            Ok(okay) => …