View Code of Problem 24

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