View Code of Problem 24

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