View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main(){
	int a,b,c;
	double p,s;
	while(scanf("%d%d%d",&a,&b,&c)!=EOF)
	{
	   p=1.0*(a+b+c)/2;
	   s=sqrt(p*(p-a)*(p-b)*(p-c));
	
	   printf("%0.2f\n",s);
	}
	return 0;
}