View Code of Problem 24

# include<stdio.h>
# include<math.h>
int main()
{
  float a,b,c;
  float s,p;
  while(scanf("%f %f %f",&a,&b,&c)!=EOF)
  {
    p = (a+b+c)/2;
    s = sqrt(p*(p-c)*(p-b)*(p-a));
    printf("%0.2f\n",s);
  }
  return 0;
}