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Guessing Game in Rust
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| [package] | |
| name = "guess-game" | |
| version = "0.1.0" | |
| edition = "2021" | |
| # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html | |
| [dependencies] | |
| rand = "0.8.5" |
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| use rand::Rng; | |
| use std::io; | |
| use std::io::Write; | |
| fn main() { | |
| // Set number, last number in range is not included so +1 | |
| let x = rand::thread_rng().gen_range(1..101); | |
| // Track number of guesses | |
| let mut count = 1; | |
| // Prompt | |
| println!("Guess a number from 1-100:"); | |
| loop { | |
| print!("Guess #{}: ", count); | |
| // Output gets flushed on new lines | |
| // To prompt on same line requires manual flush the output | |
| let _ = io::stdout().flush(); | |
| // Get user input | |
| let mut input = String::new(); | |
| io::stdin().read_line(&mut input).expect("User Input Error"); | |
| // validate user input | |
| let guess = match input.trim().parse::<i32>() { | |
| Ok(x) => x, | |
| Err(_err) => { | |
| println!(" > Not a number. Try again"); | |
| continue; | |
| } | |
| }; | |
| if guess > x { | |
| println!(" > Too high"); | |
| } | |
| else if guess < 0 { | |
| println!(" > 🤨 negative number, did you read instructions?"); | |
| } | |
| else if guess < x { | |
| println!(" > Too low"); | |
| } | |
| else { | |
| println!(" 🎉 Congrats, it took {} guesses", count); | |
| break; | |
| } | |
| count += 1; | |
| } | |
| } |
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