static void Main(string[] args)
{
Rational a, b;
a = new Rational(2, -4);
b = new Rational(4, 2);
Console.WriteLine("Printing a");
Console.WriteLine("Rational number is " + a.ToString());
Console.WriteLine();
Console.WriteLine("Printing b");
Console.WriteLine("Rational number is " + b.ToString());
Console.WriteLine();
Console.WriteLine("Adding a & b");
Console.WriteLine("Rational number is " + (a + b).ToString());
Console.WriteLine();
Console.WriteLine("Subtracting b from a");
Console.WriteLine("Rational number is " + (a - b).ToString());
Console.WriteLine();
Console.WriteLine("Multiplying a & b");
Console.WriteLine("Rational number is " + (a * b).ToString());
Console.WriteLine();
Console.WriteLine("Dividing a by b");
Console.WriteLine("Rational number is " + (a / b).ToString());
Console.ReadLine();
}
public void Test2()
{
Rational r = new Rational(0, 0);
Assert.NotNull(r);
Assert.IsTrue(r.Denominator > 0);
}