program to find armstrong number between 1 to 1000

Can I point out that there's also a fundamental problem here with the definition of an Armstrong number.

Technically, an Armstrong number is an N digit number which is the sum of its digits raised to the power N. See for example this link:

http://everything2.net/index.pl?node_id=1407017&displaytype=printable&lastnode_id=1407017 

So:

for one digit numbers, you raise to the power 1.
for two digit numbers, you raise to the power 2.
for three digit numbers, you raise to the power 3.

In other words, you only cube the digits if it's a 3 digit number.

Allowing for this, the program should now read:

That was a small mistake instead of
sum = reminder*reminder*reminder;
use
sum += reminder * reminder * reminder;
pleas see the changes.

 public static void Main()
  {
  int reminder, i, num;
  for (i = 1; i < 1000; i++)
  {
  int sum = 0;
  num = i;
  while (num > 0)
  {
  reminder = num % 10;
  sum += reminder * reminder * reminder;
  num = num / 10;
  }
  if (sum == i)
  {
  Console.WriteLine("{0} is armstrong number.", i);
  }
  }
  Console.ReadLine();
  }
}



Mark it as "Accepted Answer", If its useful