Code shared from the Rust Playground

playground.rs

struct Test {
    a: u32,
    b: u32,
}

impl Test {
    fn new(a: u32, b: u32) -> Test {
        Test { a, b }
    }
}

fn main() {
    let test = Test::new(16, 12);
    let res: u32 = test.a * test.b;
}