// class2demo1.cpp

#include <iostream>
using namespace std;

int main()
{
	double length = 0;			// length of rectangle
	double width = 0;			// width of rectangle
	double result = 0;			// perimeter of rectangle


	cout << "length: ";
	cin >> length;
	cout << "width: ";
	cin >> width;

	result = (length + width) * 2;			// general formula for circle

	cout << "The perimeter is " << result << endl;

	return 0;
}// end of main