using System;
 
public class Test
{
	public struct Rational 
	{
	    private long numerator;
	    private long denominator;
 
	    public Rational(long num = 0, long denom = 1)   // This is allowed!!!
	    {
	        numerator   = num;
	        denominator = denom;
	    }
 
	    override public string ToString() {
	    	return (numerator/(1.0*denominator)).ToString();
	    }
	}
 
	public static void Main()
	{
		Console.WriteLine(new Rational());
		Console.WriteLine(new Rational(42));
	}
}

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