Solution: Age limit

---

examples/other/age-limit-18/src/main.rs

use std::io;
use std::io::Write;

fn main() {
    let mut age = String::new();

    print!("How old are you? ");
    io::stdout().flush().expect("Oups");
    io::stdin()
        .read_line(&mut age)
        .expect("Failed to get input");

    let age: f32 = age
        .trim()
        .parse()
        .unwrap_or_else(|_| panic!("Could not convert '{age}' to floating point number"));
    if age < 18.0 {
        println!("You are under 18. You cannot legally drink alcohol!");
    } else {
        println!("Congratulations, you can legally drink alcohol!");
    }
}

examples/other/age-limit-18-21/src/main.rs

use std::io;
use std::io::Write;

fn main() {
    let mut age = String::new();

    print!("How old are you? ");
    io::stdout().flush().expect("Oups");
    io::stdin()
        .read_line(&mut age)
        .expect("Failed to get input");

    let age: f32 = age
        .trim()
        .parse()
        .unwrap_or_else(|_| panic!("Could not convert '{age}' to floating point number"));
    if age < 18.0 {
        println!("You are under 18. You cannot legally drink alcohol!");
    } else if age >= 21.0 {
        println!("Congratulations, you can legally drink alcohol! Even in the USA.");
    } else {
        println!("You can drink alcohol, unless you are in the USA.");
    }
}

examples/other/age-limit-anywhere/src/main.rs

use std::collections::HashMap;
use std::io;
use std::io::Write;

fn main() {
    let mut age = String::new();
    print!("How old are you? ");
    io::stdout().flush().expect("Oups");
    io::stdin()
        .read_line(&mut age)
        .expect("Failed to get input");
    let age: f32 = age
        .trim()
        .parse()
        .unwrap_or_else(|_| panic!("Could not convert '{age}' to floating point number"));

    let mut country = String::new();
    print!("Which country are you in? ");
    io::stdout().flush().expect("Oups");
    io::stdin()
        .read_line(&mut country)
        .expect("Failed to get input");
    let country = country.trim();

    let age_limit = HashMap::from([
        ("Australia", 18.0),
        ("Austria", 16.0), // Actually it depends on the type of alcohol
        ("Hungary", 18.0),
        ("Israel", 18.0),
        ("Pakistan", 21.0), // Prohibited for muslims, 21 for others
        ("Paraguay", 20.0),
        ("USA", 21.0),
    ]);

    if age_limit.contains_key(&country) {
        if age_limit[&country] <= age {
            println!("Congratulations, you can legally drink alcohol in {country}.");
        } else {
            println!(
                "Sorry. You are under {}. You cannot legally drink alcohol in {}!",
                age_limit[country], country
            );
        }
    } else {
        println!("You typed in '{country}'. Unfortunately we don't have that name in our database");
    }
}