View Code of Problem 24

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