View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main()
{
	int a,b,c;
	double p=0,q,s;
	while(scanf("%d%d%d",&a,&b,&c)!=EOF)
	{
		if(a+b>c&&b+c>a&&c+a>b)
		{p=(a+b+c)/2.0;
		q=p*(p-a)*(p-b)*(p-c);
		s=sqrt(q);
		printf("%.2lf\n",s);
		p=0;
		}
		
	}
	return 0;
}