rustbook/rectangles/src/main.rs

46 lines
895 B
Rust

#[derive(Debug)]
struct Rectangle {
width: u32,
height: u32,
}
impl Rectangle {
fn area(&self) -> u32 {
self.width * self.height
}
fn can_hold(&self, r2: &Rectangle) -> bool {
self.width > r2.width && self.height > r2.height
}
}
impl Rectangle {
fn square(size: u32) -> Self {
Self {
width: size,
height: size,
}
}
}
// MAIN
fn main() {
let rect1 = Rectangle { width:30, height:50};
let rect2 = Rectangle { width:10, height:40};
let rect3 = Rectangle { width:60, height:45};
println!("r: {}", rect1.area());
println!("r: {}", rect2.area());
println!("r: {}", rect3.area());
println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
let sq = Rectangle::square(5);
println!("r: {:?}", sq);
}