public static void NextLeapYear(out DateYear nextYear)
{
var y = DateTime.Now.Year;
do
{
y++;
} while (!IsLeapYear(y));
nextYear=new DateYear(y);
}
static void Main(string[] args)
{
//---Create a helLo world program in C#
Console.WriteLine("Hello world!");
//---Create instances of value types and reference types
Color c = Color.Green;
Book skeet = new Book {Title = "C# in Depth", Author = "Skeet J.", Year = 2013};
Console.WriteLine("Book to read: " + skeet);
skeet.Isbn = "9781617291340";
skeet.Typography = "Mannan";
DateYear myBirthYear=new DateYear(1989);
//---Use static methods
var age = DateYear.HowOld(myBirthYear.Year);
Console.WriteLine("I am "+age+" years old.");
Console.WriteLine("My birth year is " + (DateYear.IsLeapYear(myBirthYear.Year)?"":"not")+ " leap year.");
DateYear nextLeapYear;
//---Write a method for each type of parameter modifier
DateYear.NextLeapYear(out nextLeapYear);
Console.WriteLine("The next leap year is " + nextLeapYear.Year);
DateYear.Add(ref nextLeapYear, 4);
Console.WriteLine("The next next leap year is " + nextLeapYear.Year);
//---Use boxing and unboxing to prove the understanding of it
object box = Color.Indigo;
var unbox = (int) box;
Console.WriteLine("Boxed color:"+box+"; Unboxed:"+unbox);
box = 7;
object unboxc = (Color)box;
Console.WriteLine("Boxed color:" + box + "; Unboxed:" + unboxc);
Console.ReadKey();
}
public static void Add(ref DateYear year, int value)
{
year.Year += value;
}
