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=(1.0*(a+b+c))/2;
    	double s;
    	s=sqrt(p*(p-a)*(p-b)*(p-c));
    	printf("%.2f\n",s);
	}
}