View Code of Problem 24

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