use std::io;

fn main() {
    println!("Celsius to Fahrenheit Converter");
    println!("Enter temperature in Celsius");

    let mut temp = String::new();

    io::stdin().read_line(&mut temp)
        .expect("Failed to read line");

    let  input_temp: f64 = temp.trim().parse()
        .expect("Input must be a number");

    let converted = c_to_f(input_temp);

    println!("{}°C is {}°F", input_temp, converted);
}

fn c_to_f(celsius: f64) -> f64 {
    celsius * 1.8 + 32.0
}