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 p = 0.5 * (a+b+c);
		printf("%.2f\n", sqrt(p*(p-a)*(p-b)*(p-c)));
	}
	return 0;
}