View Code of Problem 24

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