problem getting my classes to work

[pilotnate]

Just trying to get it to work. I am new to classes and have read over the tutorials, including the one on this site, but am still confused. Whats wrong?

 /*
This program calculates the area and perimeter of a rectangle using classes.  It then tests whether the two are equal
in both parameters.
*/

#include <iostream>
using namespace std;

//calculates area and perimeter of the rectangle
class Rect
{
	double length, width;		//sides of the rectangle
	double perimeter;			//perimeter
	double areaRect;			//area
public:
	Rect(double, double);
	//void set_sides(double set_length, double set_width);
	double perim(double length, double width);
	double area(double length, double width);

	double getPerimeter() { return perimeter; }
	double getArea() { return areaRect; }
};

Rect::Rect(double a, double b)
{
	length = a;
	width = b;
}
/*
void Rect::set_sides(double set_length, double set_width)
{
	length = set_length;
	width = set_width;
}
*/
double Rect::perim(double length, double width)
{
	cout << length << '\t' << width << endl;
	perimeter = (2 * length) + (2 * width);
	cout << perimeter << endl;
	return perimeter;
}

double Rect::area(double length, double width)
{
	areaRect = length * width;
	cout << areaRect << endl;
	return areaRect;
}

int main()
{
	Rect rect1(5,6);
	Rect rect2(10,3);
	
	
	if (rect1.getPerimeter() == rect2.getPerimeter())
		cout << "The perimeter's of each rectangle are the same." << endl;
	if (rect1.getArea() == rect2.getArea())
		cout << "The area's of each rectangle are the same" << endl;


	system("pause");
	return 0;
}

[Yanson]

the value of your perimeter and areaRect variables is undefined because you never call the method that calculates them.

also you don't need to pass length and width to your perim or area methods.

[pilotnate]

solved thank you