Program To Find Area of Traingle In C++

#include<iostream.h>

#include<conio.h>

#include<math.h>

main()

{

clrscr();

float a,b,c,s,area;

cout<<"Enter first number=";

cin>>a;

cout<<"Enter second number=";

cin>>b;

s=(a+b+c/2);

area=sqrt(s*(s-a)*(s-b)*(s-c));

cout<<s<<endl;

cout<<area;

getch();

}