Question

I’m trying to write a program in C# that takes in an int x and decides if it has exactly 7 digits. Right now I’m using x.toString().Length == 7 to check, but I noticed that if the number starts with 0, it automatically gets omitted and I get an incorrect answer (ie the program thinks the input length is less than 7)

Is there a way to fix this? Thanks in advance.

Edit: Sorry I should have mentioned, this was a program to collect and validate the format of ID numbers (so I didn’t want something like 0000001 to default to 1) Thanks for the string input suggestion, I think I’m going to try that.

Answer 1

If you want to preserve the input formatting, you must not convert the input to an int. You must store it in a String.

You say your program takes an int. At that point you have already lost. You need to change that interface to accept String inputs.