static void Main(string[] args)
{
{
double coefficientA = 0;
double coefficientB = 0;
double coefficientC = 0;
Console.WriteLine("quadratic equation: ax2 + bx + c = 0");
Console.Write("a = ");
while (!double.TryParse(Console.ReadLine(), out coefficientA))
{
Console.WriteLine("Input Error! Insert number");
}
Console.Write("b = ");
while (!double.TryParse(Console.ReadLine(), out coefficientB))
{
Console.WriteLine("Input Error! Insert number");
}
Console.Write("c = ");
while (!double.TryParse(Console.ReadLine(), out coefficientC))
{
Console.WriteLine("Input Error! Insert number");
}
string result = string.Empty;
if (coefficientA == 0)
{
result = "This is not a quadratic equation";
}
else
{
if (coefficientB == 0 || coefficientC == 0)
{
result = Calculator.nQuadraticEquation(coefficientA, coefficientB, coefficientC, result);
}
else
{
result = Calculator.quadraticEquation(coefficientA, coefficientB, coefficientC, result);
}
}
Console.WriteLine(result);
Console.ReadKey();
}
}
