[Flags]
enum Days
{
    None = 0x0,
    Sunday = 0x1,
    Monday = 0x2,
    Tuesday = 0x4,
    Wednesday = 0x8,
    Thursday = 0x10,
    Friday = 0x20,
    Saturday = 0x40
}
class MyClass
{
    Days meetingDays = Days.Tuesday | Days.Thursday;
}

// Initialize with two flags using bitwise OR.
meetingDays = Days.Tuesday | Days.Thursday;

// Set an additional flag using bitwise OR.
meetingDays = meetingDays | Days.Friday;

Console.WriteLine("Meeting days are {0}", meetingDays);
// Output: Meeting days are Tuesday, Thursday, Friday

// Remove a flag using bitwise XOR.
meetingDays = meetingDays ^ Days.Tuesday;
Console.WriteLine("Meeting days are {0}", meetingDays);
// Output: Meeting days are Thursday, Friday

// Test value of flags using bitwise AND.
bool test = (meetingDays & Days.Thursday) == Days.Thursday;
Console.WriteLine("Thursday {0} a meeting day.", test == true ? "is" : "is not");
// Output: Thursday is a meeting day.

string s = Enum.GetName(typeof(Day), 4);
Console.WriteLine(s);

Console.WriteLine("The values of the Day Enum are:");
foreach (int i in Enum.GetValues(typeof(Day)))
    Console.WriteLine(i);

Console.WriteLine("The names of the Day Enum are:");
foreach (string str in Enum.GetNames(typeof(Day)))
    Console.WriteLine(str);