View Code of Problem 24

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