Area of Triangle Calculator

/*****************************************************
  Name: Area of triangle Calculator
 
  Copyright: BCS-1A
 
  Author: Muhammad Hussnain Imtiaz
 
  Date: 21/12/11 23:46
 
  Description: Porgram to calculate area of triangle
******************************************************/

 # include <iostream>
 # include <conio.h>
 # include <cmath>
 using namespace std ;

 int main ()
 {
// local declaration
 double    a=0.0,
           b=0.0,
           c=0.0,
        area=0.0,
           s=0.0,
           ;
           cout << "        Area of Triangle calculater     " << endl << endl ;
           cout << " Enter 'y' to continue and 'n' to exit :" ;
while (getche() != 'n')
{
           system("CLS");
           cout << endl << endl;
           cout << " Please Enter the side-1 of Triangle :" ;
           cin  >> a ;
           cout << " Please Enter the side-2 of Triangle :" ;
           cin  >> b ;
           cout << " Please Enter the side-3 of Triangle :" ;
           cin  >> c ;
if( a+b>c && b+c>a && c+a>b )          
   {
     s=(a+b+c)/2.0 ;
     area=sqrt ((s*(s-a)*(s-b)*(s-c))) ;
           cout << "\n\n\n     The Area of Triangle is: " << area ;          
           if (a==b && b==c)
           {
           cout << "\n\nAll Sides of Triangle are equal in length" ;
           }
           if (a>b && a>c)
           {
           cout << "\n\n  Side-1 is Greater than other sides" ;
           }
           if (b>a && b>c)
           {
           cout << "\n\n  Side-2 is Greater than other sides" ;
           }
           if (c>a && c>b)
           {
           cout << "\n\n  Side-3 is Greater than other sides" ;
           }
           if (a<b && a<c)
           {
           cout << "\n\n     Side-1 is Less than other sides" ;
           }
           if (b<a && b<c)
           {
           cout << "\n\n     Side-2 is Less than other sides" ;
           }
           if (c<a && c<b)
           {
           cout << "\n\n     Side-3 is Less than other sides" ;      
           }
           cout << "\n\n\n  Enter 'y' to continue and 'n' to exit :" ;
   }// End of if
   else
   {
           cout << "\n        Triangle is not Constructed" ;
           cout << "\n\n\n  Enter 'y' to continue and 'n' to exit :" ;
   }//end of else
}// end of while
           system ("CLS");
           cout << "\n\n\n\n\n\n\n\n\n\n\n\n               "
                << "   Created By:Mohammad Hussnain Imtiaz " ;
     getch ();
     return 0;  
 }// end of main function