View Code of Problem 24

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