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import std.stdio;
// Base class
class Shape {
public:
void setWidth(int w) {
width = w;
}
void setHeight(int h) {
height = h;
}
protected:
int width;
int height;
}
// Derived class
class Rectangle: Shape {
public:
int getArea() {
return (width * height);
}
}
void main() {
Rectangle Rect = new Rectangle();
Rect.setWidth(5);
Rect.setHeight(7);
// Print the area of the object.
writeln("Total area: ", Rect.getArea());
}
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