Simply detects the Area of either a Rectangle or a Circle.

Snippet not made to be the most useful in the world, but to demonstrate a basic use of classes in C++.

I've been doing C++ for 2 days, so it's not the most amazing snippet in the world ;p

#include <iostream>
#include <string>
using namespace std;

class rectangleArea {
    float x, y;
public:
    void setRectangle_values (float, float);
    float rectangleAreaCalc () {return (x*y);}
};

class circleArea {
    float t;
public:
    void setCircle_values (float);
    float circleAreaCalc () {return (t*3.1415);}
};

void rectangleArea::setRectangle_values (float a, float b)
{
    x = a;
    y = b;
}

void circleArea::setCircle_values (float s)
{
    t = s*s;
}

int newlyOpened = 0;
int main ()
{
  if ( newlyOpened == 0)
  {
    cout << "Select either 'Rectangle' or 'Circle' to use.\n\n";
    newlyOpened = 1;
  }
  cout << "Which shape would you like to calculate the area of? ";
  string userShapeSelect;
  cin >> userShapeSelect;
  if ( userShapeSelect == "Rectangle" )
  {
      rectangleArea rectA;

      float UIrectangleLength, UIrectangleHeight;
      cout << "Enter [ Length ]: ";
      cin >> UIrectangleLength;
      cout << "Enter [ Height ]: ";
      cin >> UIrectangleHeight;

      rectA.setRectangle_values (UIrectangleLength, UIrectangleHeight);
      cout << "Total area of Rectangle [ length=" << UIrectangleLength << " ] and [ height=" << UIrectangleHeight << " ] is: " << rectA.rectangleAreaCalc() << "\n\n";

      main ();
  }
  else if ( userShapeSelect == "Circle" )
  {
      circleArea circA;

      int UIcircRadius;
      cout << "Enter Circle [ Radius ]: ";
      cin >> UIcircRadius;

      circA.setCircle_values (UIcircRadius);
      cout << "Total area of Circle [ Radius=" << UIcircRadius << " ] is: " << circA.circleAreaCalc() << " \n\n";

      main ();
  }
  else
  {
      cout << "Shape not recognised, please choose either [Rectangle] or [Circle]\n\n";
      main ();
  }
  cout << "There was an error running this program - please restart it\n\n";
  system("pause");
}