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)
	{
		float s;
		float p;
		p = (a + b + c) / 2.0;
		s = sqrt(p*(p - a)*(p - b)*(p - c));
		printf("%.2f\n", s);
	}
	return 0;
}