some more stuff

ch5/rectangles/src/main.rs

@@ -0,0 +1,37 @@
+#[derive(Debug)]
+struct Rect {
+    width: u32,
+    height: u32,
+}
+
+impl Rect {
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+
+    fn can_hold(&self, other: &Rect) -> bool {
+        self.width >= other.width && self.height >= other.height
+    }
+}
+
+fn main() {
+    let rect1 = Rect {
+        width: 30,
+        height: 50,
+    };
+
+    let rect2 = Rect {
+        width: 29,
+        height: 50,
+    };
+
+    let rect3 = Rect {
+        width: 29,
+        height: 51,
+    };
+
+    // println!("The area is {rect1:#?}");
+    println!("{} * {} = {}", rect1.width, rect1.height, rect1.area());
+    println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
+    println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
+}