using System;
using System.Collections.Generic;
using System.Text;
class Program
{
static void Main(string[] args)
{
bool b = new bool(); // set to false.
int i = new int(); // set to 0.
double d = new double(); // set to 0.0.
DateTime dt = new DateTime(); // set to 1/1/0001 12:00:00 AM
Console.WriteLine("{0}, {1}, {2}, {3}",b, i, d, dt);
}
}