Person Class

namespace DefiningClasses
{
    public class Person
    {
        private string name;
        private int age;

        public string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }

        public int Age
        {
            get
            {
                return age;
            }
            set
            {
                age = value;
            }
        }

        public Person(string name, int age)
        {
            Name = name;
            Age = age;
        }

        public Person(int age) : this("No name", age)
        {
        }

        public Person() : this("No name", 1)
        {
        }
    }
}