Hierarchial_Inheritance.cpp

#include <iostream>  
using namespace std;  
class Shape                 // Declaration of base class.  
{  
    public:  
    int a;  
    int b;  
    void get_data(int n,int m)  
    {  
        a= n;  
        b = m;  
    }  
};  
class Rectangle : public Shape  // inheriting Shape class  
{  
    public:  
    int rect_area()  
    {  
        int result = a*b;  
        return result;  
    }  
};  
class Triangle : public Shape    // inheriting Shape class  
{  
    public:  
    int triangle_area()  
    {  
        float result = 0.5*a*b;  
        return result;  
    }  
};  
int main()  
{  
    Rectangle r;  
    Triangle t;  
    int length,breadth,base,height;  
    std::cout << "Enter the length and breadth of a rectangle: " << std::endl;  
    cin>>length>>breadth;  
    r.get_data(length,breadth);  
    int m = r.rect_area();  
    std::cout << "Area of the rectangle is : " <<m<< std::endl;  
    std::cout << "Enter the base and height of the triangle: " << std::endl;  
    cin>>base>>height;  
    t.get_data(base,height);  
    float n = t.triangle_area();  
    std::cout <<"Area of the triangle is : "  << n<<std::endl;  
    return 0;  
}