View Code of Problem 24

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