#include <stdio.h>

class rectangle
{
        public: // member functions

                int area();
                int perimeter();
                rectangle(); // constructor
                rectangle(int,int); // ~rectangle(); is a destructor

        private: // member variables

                int length;
                int width;
};
// defining our classes area,perimeter and our constructors
int rectangle::area() //area is a member of the rectangle class due to ::
{
        return((length*width));
}

int rectangle::perimeter()
{
        return((2*width)+(2*length));
}
rectangle::rectangle()
{
        length=0;
        width=0;
}
rectangle::rectangle(int length,int width)
{
        this->length=length; //this is used to define itself
        this->width=width;
}
int main()
{
        int area,perimeter;
        area=0;
        perimeter=0;
        rectangle rect1;
        rectangle *rect2;
        rect2=new rectangle(4,10); // rect2 is a new rectangle enter length of 4 width of 10
        //rect1.length=6; does not work since length is a private class.
        area=rect1.area(); // rect1 is not a pointer . is used for structure
        perimeter=rect1.perimeter();
        printf("The rect1's area is: %d\n", area);
        printf("The rect1's perimeter is: %d\n", perimeter);
        area=rect2->area();
        perimeter=rect2->perimeter();
        printf("The rect2's area is: %d\n", area);
        printf("The rect2's perimeter is: %d\n", perimeter);
        
        return(0);
}