struct

day04_1/src/main.rs

@@ -0,0 +1,36 @@
+// #[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+impl Rectangle {
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+}
+
+fn main() {
+    let rect = (20, 30);
+    println!("The area of the rect is {}", area(rect));
+    let rect1 = Rectangle {
+        width: 14,
+        height: 37,
+    };
+    println!("The area of the rect is {}", area_struct(&rect1));
+    // dbg!(&rect1);
+    // println!("rect1 is {:#?}",rect1)
+    let rect2 = Rectangle{
+        width:23,
+        height:59
+    };
+    println!("The area of the rect is {}",rect2.area());
+}
+
+fn area(dims: (u32, u32)) -> u32 {
+    dims.0 * dims.1
+}
+
+fn area_struct(rect: &Rectangle) -> u32 {
+    rect.width * rect.height
+}