View Code of Problem 24

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