View Code of Problem 24

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