View Code of Problem 24

#include<stdio.h>
#include<math.h> 
int main()
{
	int a,b,c;
	double s,p;
	scanf("%d %d %d", &a, &b, &c);
	p = (a+b+c)/2.0;
	s = sqrt(p*(p-a)*(p-b)*(p-c));
	printf("%.2lf", s);
	return 0;
}