Hangman rust game written by ChatGPT

main.rs

/// Everthing below this comment block was generated by ChatGPT from the prompt:
/// "write a hangman game in the rust language without comments"
/// (with comments it was too long and cut off the end)
use std::collections::HashSet;
use std::io;

const MAX_GUESSES: i32 = 6;

fn main() {
    println!("Enter a word for the other player to guess: ");
    let mut word = String::new();
    io::stdin()
        .read_line(&mut word)
        .expect("Failed to read word");

    word = word.trim().to_string();

    let unique_letters: HashSet<char> = word.chars().collect();

    let mut hidden_word = String::new();
    for _ in 0..word.len() {
        hidden_word.push('_');
    }

    let mut guessed_letters = String::new();

    let mut remaining_guesses = MAX_GUESSES;

    let mut game_over = false;

    while !game_over {
        println!("Current word: {}", hidden_word);
        println!("Remaining guesses: {}", remaining_guesses);
        println!("Enter a letter: ");

        let mut letter = String::new();
        io::stdin()
            .read_line(&mut letter)
            .expect("Failed to read letter");

        letter = letter.trim().to_string();

        if guessed_letters.contains(&letter) {
            println!("You have already guessed that letter. Please try again.");
            continue;
        }

        guessed_letters.push_str(&letter);

        if word.contains(&letter) {
            for (i, c) in word.char_indices() {
                if c == letter.chars().next().unwrap() {
                    hidden_word.remove(i);
                    hidden_word.insert(i, c);
                }
            }
        } else {
            remaining_guesses -= 1;
        }

        if remaining_guesses == 0 {
            game_over = true;
            println!("You have run out of guesses. The word was: {}", word);
        } else if hidden_word == word {
            game_over = true;
            println!(
                "Congratulations! You have successfully guessed the word: {}",
                word
            );
        }
    }
}