#include <iostream>
#include <cmath>
using namespace std;

int roots (double a, double b, double c, double & r1, double  & r2)
{
	//pre: a,b,c are the coefficients of x^2, x and 1
	//post: returns the roots as reference parameters, 
	// returns the number of roots as the function's return value

	double disc = b*b-4*a*c;
	if (disc>0)
	{
		r1 = (-b+sqrt(disc))/(2*a);
		r2 = (-b-sqrt(disc))/(2*a);
		return 2;
	}
	else if (disc == 0)
	{
		r1 = -b/(2*a);
		return 1;
	}
	else
		return 0;
}

int main()
{
	double coefx2, coefx, coef1, root1, root2;
    int numroots;

	cout << "Enter the coefficients for x^2, x and 1: ";
	cin >> coefx2 >> coefx >> coef1;

	numroots = roots(coefx2, coefx, coef1, root1, root2);

	if (numroots == 0)
		cout << "No roots " << endl;
	else if (numroots == 1)
		cout << "There is only one root and it is " << root1 << endl;
	else 
		cout << "There are two roots and they are " << root1 << " and " << root2 << endl;

	return 0;
}