View Code of Problem 24

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

	return 0;
}