using System;

public class Program

{

    public static void Main()

    {   

        // should output true - this calls 2 constructors (with params and default)

        var p = new Person("Johny", 23);

        Console.WriteLine(p.Reset);

        Console.WriteLine();

        // should out put age = 67 - it calls all three constructors...

        var p2 = new Person("Johny"); // age is set to 67 and reset is true even if you didn't pass the values...

        Console.WriteLine(p2.Age);

        Console.WriteLine(p2.Reset);

    }

}

​

public class Person{

    public Person(){

        Reset = true;

    }

    // by doing this : this() you also call the default constructor... can do whatever resetting etc....

    public Person(string name, int age) : this() {

        Name = name;

        Age = age;

    }

    public Person(string name) : this(name, 67){

        Name = name;

    }

    public string Name {get;set;}

    public int Age {get;set;}

    public bool Reset {get;set;}

}