View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main()
{	
   
	float s,k,a,b,c;
	while(scanf("%f %f %f",&a,&b,&c)!=EOF)
	{
	k=(a+b+c)/2;
	s=sqrt(k*(k-a)*(k-b)*(k-c));
	printf("%.2f\n",s);
    } 
	
}