View Code of Problem 24

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