Hi,
I have to write a program that check a textbox and count the chars (numbers) in it then subtract 2ND number from the 1ST and the 3RD from the 2ND and so on - Now IF the number (after subtract ) is fixed or not. so, how's this done?

P.S. how can i split a number - 123456789 - to a 1,2,3,4,5,6,7,8,...???

thanks in advance.