A simple program to understand classes in C#

using System;

class building
{
    public int floors;   //number of floors         //C# class doesn't support 'public :'
    public int area;     //total square footage of building
    public int occupants;  //number of occupants
}

class building_Demo
{
    public static void Main()
    {
        building house = new building();  //create a bbuilding object
        int areaPP;    //area per person
      
        //assign values to fields to fields in house
        house.occupants = 4;
        house.area = 2500;
        house.floors = 2;
  
    //compute the area per person
    areaPP = house.area/house.occupants;
  
    Console.WriteLine("house has:\n "+
                       house.floors + " floors\n "+
                       house.occupants + " occupants\n "+
                       house.area + " total area\n "+
                       areaPP + " area per person");
    }
}

OUTPUT:
 house has:
  2  floors
  4  occupants
  2500  total area
  625 area per person