View Code of Problem 24

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