View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main()
{
	float a,b,c,s;
	while(scanf("%f%f%f",&a,&b,&c)!=EOF)
	{
		double l=(a+b+c)/2;
		s=sqrt(l*(l-a)*(l-b)*(l-c));
		printf("%.2f\n",s);
	}
	
	
	return 0;
}