-> practice on inheritance.

Author: aryanjain28

practice14.cpp

@@ -0,0 +1,45 @@
+#include <iostream>
+
+using namespace std;
+
+class Shape
+{
+private:
+    int getWidth();
+    int getHeight();
+
+protected:
+    int width;
+    int height;
+
+public:
+    Shape() = default;
+    Shape(int, int);
+};
+
+int Shape::getWidth() { return width; }
+int Shape::getHeight() { return height; }
+Shape::Shape(int w, int h)
+{
+    width = w;
+    height = h;
+}
+
+class Rectangle : public Shape
+{
+public:
+    Rectangle(int w, int h);
+    int area();
+};
+
+// this is the way to initialize parent's contructor
+Rectangle::Rectangle(int w, int h) : Shape(w, h) {}
+
+int Rectangle::area() { return width * height; }
+
+int main()
+{
+    Rectangle r1(11, 11);
+    cout << "Area of rectange: " << r1.area() << endl;
+    return 1;
+}