View Code of Problem 24

#include <stdio.h>
#include <math.h>
 
int main()
{ 
	float a,b,c;
	float p,s;
	scanf ("%1f%1f%1f",&a,&b,&c);
	p=(a+b+c)/2.0;
	s=(float)sqrt(p*(p-a)*(p-b)*(p-c));     
 
	printf("%.2f\n",s);
	return 0;
}