C++ Cartesian plane for a circle.what's value for center?

Need to write a program that prompts user to enter the center and a point on a circle. What is or are the value for center in a Cartesian plane. If someone could write the code that I need for this problem I am even willing to pay a little cash it is taking me too much time and I as a nurse I very little time on my hands. If you can help for free with a little help, and or the whole code I will $$. Please do get back as soon as possible.

#include <iostream>
#include <math>

#define PI 3.14

int main()
{

double xc, yc,xp,yp;

cout << "Please enter the X coordinate of center: " << endl;
cin >> xc;
cout << "Please enter the Y coordinate of center: " << endl;
cin >> yc;

cout << "Please enter the X coordinate of point: " << endl;
cin >> xp;
cout << "Please enter the Y coordinate of point: " << endl;
cin >> yp;

double radius = sqrt(pow(xp- xc , 2.0) +
pow(yc - yp, 2.0));

double diameter = 2*radius;
double circumference = diameter*PI;
double area = PI*pow(radius, 2.0);

cout << "radius = " << radius << " diameter = " << diameter << " circumference = " << circumference << "area = " << area << endl;



}

yes its right but the me depends on the radius of the circle. In C++ the formula of a circle is circle(x,y,radius); and use to define this by using #include(stdio.h); thanks - walterdom apaga Report It