Write a program that get a value of three sides of triangle and calculate its area using farmula

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

int s,a,b,c;

float area;

cout<<"Enter the value of a, b and c ::";

cin>>a>>b>>c;

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

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

area=sqrt(area);

cout<<"Area of triangle is "<<area;

getch();

}