Triangle Area

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 //prg to find area of triangle  
 //Downloaded From www.c4cpp.co.nr. (C)2009.All rights reserved.  
 #include<iostream.h>  
 #include<conio.h>  
 #include<math.h>  
 void main()  
 {  
 clrscr();  
 float a,b,c,p,ar;  
 cout<<"Enter 3 sides :"<<endl;  
 cin>>a>>b>>c;  
 p=a+b+c;  
 ar=sqrt(p*(p-a)*(p-b)*(p-c));  
 cout<<"Area :"<<ar;  
 getch();  
 }