From 2ae92ce449a8456a25a5faebf47f38fdfd9f226c Mon Sep 17 00:00:00 2001 From: Jordan Gong Date: Thu, 13 Aug 2020 17:16:32 +0800 Subject: Implement and use "Rectangle" struct --- rectangles/src/main.rs | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 rectangles/src/main.rs (limited to 'rectangles/src') diff --git a/rectangles/src/main.rs b/rectangles/src/main.rs new file mode 100644 index 0000000..43c2c30 --- /dev/null +++ b/rectangles/src/main.rs @@ -0,0 +1,53 @@ +#[derive(Debug)] +struct Rectangle { + width: u32, + height: u32, +} + +impl Rectangle { + fn square(size: u32) -> Rectangle { + Rectangle { + width: size, + height: size, + } + } + fn area(&self) -> u32 { + self.width * self.height + } + + fn can_hold(&self, other: &Rectangle) -> bool { + self.width > other.width && self.height > other.height + } +} + +fn main() { + let rect1 = Rectangle { + width: 30, + height: 50, + }; + + println!( + "The area of the rectangle is {} square pixels.", + rect1.area() + ); + + let rect2 = Rectangle { + width: 10, + height: 40, + }; + + let rect3 = Rectangle { + width: 60, + height: 45, + }; + + println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2)); + println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3)); + + let sqr = Rectangle::square(30); + + println!( + "The area of the square is {} square pixels.", + sqr.area() + ); +} -- cgit v1.2.3