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\n",s);
  	return 0;
}