View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main()
{
	int a,b,c;
  	float s,q;
  	while(scanf("%d %d %d",&a,&b,&c)!=EOF)
        {
        	q=(a+b+c)/2.0;
          	s=sqrt(q*(q-a)*(q-b)*(q-c));
          	printf("%.2f\n",s);
        }
  	return 0;
}