if (root1 >= 0)
 
{
counter++
else if (root2 >= 0)
 
counter++
 
}

      #include <fstream> // Header File for File Reading
      #include <iostream> // Header File for General I/O-put
      #include <math.h>
      using namespace std; // Use namespacing
 
int main()
{
 
ifstream in_stream;
ofstream out_stream;
 
	int a(0), b(0), c(0), Lasta(0), Lastb(0), Lastc(0);
	double bsqrd, fourac, root, root1, root2;
 
 
in_stream.open("inputfile.txt");
while (1)
      {
		Lasta=a; Lastb=b; Lastc=c;
 
		in_stream >> a >> b >> c;
		if (a==Lasta && b==Lastb && c==Lastc){break;}
 
 
 
		// calculations
 
		bsqrd = b*b;
		fourac = 4*a*c;
		root = sqrt(bsqrd - fourac);
		root1 = (-b + root)/4;
		root2 = (-b - root)/4;
 
 
		cout << "the three values for this quadratic are" << " " << a << " " << b << " " <<c << endl;
		cout << "The value of x1 is: " << root1 << endl;
		cout << "The value of x2 is: " << root2 << endl;
 
 
 
      }
 
 
 
in_stream.close();
 
 
return 0;
}