diff options
Diffstat (limited to 'src/doc/book/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs')
-rw-r--r-- | src/doc/book/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs b/src/doc/book/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs new file mode 100644 index 000000000..12f497e18 --- /dev/null +++ b/src/doc/book/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs @@ -0,0 +1,45 @@ +use rand::Rng; +use std::cmp::Ordering; +use std::io; + +fn main() { + println!("Guess the number!"); + + let secret_number = rand::thread_rng().gen_range(1..=100); + + println!("The secret number is: {secret_number}"); + + loop { + println!("Please input your guess."); + + let mut guess = String::new(); + + // ANCHOR: here + // --snip-- + + io::stdin() + .read_line(&mut guess) + .expect("Failed to read line"); + + // ANCHOR: ch19 + let guess: u32 = match guess.trim().parse() { + Ok(num) => num, + Err(_) => continue, + }; + // ANCHOR_END: ch19 + + println!("You guessed: {guess}"); + + // --snip-- + // ANCHOR_END: here + + match guess.cmp(&secret_number) { + Ordering::Less => println!("Too small!"), + Ordering::Greater => println!("Too big!"), + Ordering::Equal => { + println!("You win!"); + break; + } + } + } +} |