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Rust learning very first example
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| use std::io; | |
| use rand::Rng; | |
| fn guess_number() -> i32 { | |
| let mut guess = String::new(); | |
| println!("What is your guess?"); | |
| io::stdin().read_line(&mut guess).expect("Could not read line"); | |
| return match guess.trim().parse() { | |
| Ok(n) => n, | |
| Err(_e) => { | |
| println!("Wrong number!"); | |
| std::process::exit(1); | |
| }, | |
| }; | |
| } | |
| fn get_random_number(max: Option<i32>) -> i32 { | |
| let mut rng = rand::thread_rng(); | |
| return rng.gen_range(1..=max.unwrap_or(10)); | |
| } | |
| fn main() { | |
| let max_guess_count = 3; | |
| let max_value = 10; | |
| println!("I pick a number between 1-{max_value}. Please guess my number. You have {max_guess_count} guesses."); | |
| let my_num = get_random_number(Some(max_value)); | |
| let mut count = 0; | |
| let mut found = false; | |
| while !found && count < max_guess_count { | |
| found = my_num == guess_number(); | |
| count = count + 1; | |
| } | |
| if found { | |
| println!("That was a correct number! You guessed in {count} times."); | |
| } else { | |
| println!("You failed. My number was {my_num}"); | |
| } | |
| } |
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