/* C++ Program to calculate the area and perimeter of rectangles using concept of inheritance. */ #includeusing namespace std; class Rectangle { protected: float length, breadth; public: Rectangle(): length(0.0), breadth(0.0) { cout<<"Enter length: "; cin>>length; cout<<"Enter breadth: "; cin>>breadth; } }; /* Area class is derived from base class Rectangle. */ class Area : public Rectangle { public: float calc() { return length*breadth; } }; /* Perimeter class is derived from base class Rectangle. */ class Perimeter : public Rectangle { public: float calc() { return 2*(length+breadth); } }; int main() { cout<<"Enter data for first rectangle to find area.\n"; Area a; cout<<"Area = "<
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