MSDN implicit operator example

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class Digit
    public Digit(double d) { val = d; }
    public double val;

    // User-defined conversion from Digit to double
    public static implicit operator double(Digit d)
        Console.WriteLine("Digit to double implict conversion called");
        return d.val;
    //  User-defined conversion from double to Digit
    public static implicit operator Digit(double d)
        Console.WriteLine("double to Digit implict conversion called");
        return new Digit(d);

class Program
    static void Main(string[] args)
        Digit dig = new Digit(7);
        //This call invokes the implicit "double" operator
        double num = dig;
        //This call invokes the implicit "Digit" operator
        Digit dig2 = 12;
        Console.WriteLine("num = {0} dig2 = {1}", num, dig2.val);


Digit to double implict conversion called double to Digit implict conversion called num = 7 dig2 = 12

Live Demo on .NET Fiddle

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