View Code of Problem 24

#include<stdio.h>
#include<math.h>
#include<string.h>		
void main()
{
	int a,b,c;
	double s,t;
	while(scanf("%d%d%d",&a,&b,&c)!=EOF)
	{
		t=(a+b+c)/2.0;
		s=sqrt(t*(t-a)*(t-b)*(t-c));
		printf("%.2lf\n",s);

	}
}