Pattern matching in Rust...

patternmatch.rs

fn main() {
    let x = 3.75f64;
    
    match x {
        1.0..1.99 => println!("x is between one and two"),
        2.0..2.99 => println!("x is between two and three"),
        3.0..3.99 => println!("x is between three and four"),
        4.0..4.99 => println!("x is between four and five"),
        5.0..5.99 => println!("x is between five and six"),
        _ => println!("x is bigger than five") // catches all other possible values of `x`
    }
}

the latest working code should be like this

fn main() {
    let x = 3.75f64;

    match x {
        1.0...1.99 => println!("x is between one and two"),
        2.0...2.99 => println!("x is between two and three"),
        3.0...3.99 => println!("x is between three and four"),
        4.0...4.99 => println!("x is between four and five"),
        5.0...5.99 => println!("x is between five and six"),
        _ => println!("x is bigger than five") // catches all other possible values of `x`
    }
}