using System;
 
namespace ConsoleApplication2
{
    class Program
    {
 
        static void Main(string[] args)
        {
            //Object 1
 
            var p1 = new Person
            {
                FullName = "Le Minh Tuan",
                Age = 26,
                Address = "Da Nang, Viet Nam"
            };
 
            p1.ShowInfo();
 
            //Object 2
            var p2 = new Person("Le Khanh Tung", 27, "Da Nang, Viet Nam");
            p2.ShowInfo();
 
            //Object 3
            var p3 = new Person("Nguyen Van A");
            p3.ShowInfo();
 
            Console.ReadLine();
        }
    }
 
    class Person
    {
        public string FullName;
        public int Age;
        public string Address;
 
        //Constructor 1
        public Person()
        {
            //Default Constructor
        }
 
        //Constructor 2
        public Person(string fullName, int age, string address)
        {
            FullName = fullName;
            Age = age;
            Address = address;
        }
 
        //Constructor 3
        public Person(string fullname)
        {
            FullName = fullname;
            Age = 30;
            Address = "Viet Nam";
        }
        public void ShowInfo()
        {
            Console.WriteLine(" Name:{0} \n Age: {1} \n Address: {2}", FullName, Age, Address);
        }
    }
}