View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main()
{
 int a,b,c;
  double s;
  while(scanf("%d %d %d",&a,&b,&c)!=EOF);
  s=sqrt((a+b+c)*(a+b-c)*(a+c-b)*(b+c-a))/4;
  printf("%.2f",s);
  return 0;
  
}