// solve quadratic equation a x^2 + b x + c = 0

#include <iostream.h>
#include <stdio.h>
#include <math.h>     

// function that solves quadratic equations

void quadratic(double a, double b, double c)
{   // if b^2 - 4ac < 0, there is no real solution.
	
	double solution_1, solution_2, Delta, sqrt_Delta;
	
	Delta = MISSING;          

	if (Delta < 0) 
	{
		cout << "the equation has no real solution" << endl; 
		return;  // will not continue
	}

	else 
	{
		sqrt_Delta = sqrt(Delta); // math library function:  double sqrt(double x)
		solution_1 = MISSING;
		solution_2 = MISSING;

		cout << "one solution is " << solution_1 << endl;
		cout << "the other solution is " << solution_2 << endl;
	}
}


void main()
{
	double A, B, C;
	
	cout << "enter the 3 coefficients of a quadratic equation: " << endl;
	cin >> A >> B >> C;  // e.g. 2.45, -5.55, 2.65

	quadratic(A, B, C);

	getchar();
}