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 s1 =(a+b+c)/2.0;
		double s2= (s1-a)*(s1-b)*(s1-c)*s1;
		s2=sqrt(s2);
		
		printf("%.2f", s2 );
	}
	return 0 ;
}