Hi there,
I am implementing the concept of polymorphism and write following program of shapes.
#include <iostream>
using namespace std;
class Shape
{
protected:
double width, height;
public:
void set(double w, double h)
{
width = w;
height = h;
}
virtual double get()
{
return 0;
}
};
class Square: public Shape
{
public:
double get()
{
return (width*width);
}
};
class Rectangle: public Shape
{
public:
double get()
{
return (width*height);
}
};
class Triangle: public Shape
{
public:
double get()
{
return 1/2*(width * height);
}
};
int main()
{
Shape s;
Square sq;
Rectangle rec;
Triangle tri;
Shape *p1 = &sq;
Shape *p2 = &rec;
Shape *p3 = &tri;
p1->set(2, 2);
p2->set(2, 4);
p3->set(4, 8); //problem is here
cout<<"Area of square : " <<p1->get() <<endl;
cout<<"Area of rectangle : " <<p2->get() <<endl;
cout<<"Area of triangle : " <<p3->get() <<endl; //output is 0.
return 0;
}
But getter function of triangle is not giving the expcected output, it gives output 0. Please tell me where is the problem. Thanks !
