View Code of Problem 24

#include <stdio.h>
#include <math.h>

int main ()
{
	int a, b, c;
	while (scanf ("%d%d%d", &a, &b, &c) != EOF)
	{
		double l = (a + b + c) / 2.0;
		printf ("%.2f\n", sqrt(l * (l -a) * (l - b) * (l - c)));
	}
	return 0;
}