File: sample.rs struct Rectangle { width: u32, height: u32, } _ fn main() { let rect1 = Rectangle { width: 30, height: 50 }; println!( ~ "The perimeter of the rectangle is {} pixels.", ~ perimeter(&rect1) ); } fn area(rectangle: &Rectangle) -> u32 { rectangle.width * rectangle.height } + + fn perimeter(rectangle: &Rectangle) -> u32 { + (rectangle.width + rectangle.height) * 2 + }