View Code of Problem 24

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