How can I generate a unique 4 digit id for each human?

Question

I've been trying all morning but nothing works.

https://code.sololearn.com/c454ZOctiB5J/?ref=app

Answer 1

I added some C to generate a unique random four digit id for each person (set DEBUG to 0 for a four digit id). I'm sure there's a more elegant way in C++ though 👀

https://code.sololearn.com/c14fG6yeMah9/?ref=app

Answer 2

Seems to work to me.

You get unique ids from 1 already so why not change it to
static int id = 1000;
// error handling when id == 10000 ?
instead if you want 4 digits.

If you want 4 digits starting from 0 or 1 you can use the same setw thingy I explained earlier to get 0000, 0001, 0002 etc.

Answer 3

I want the object count + the random 4 digit id for each human

Everything I've tried either results in zero, four zeros, four of the same number, or a random number in general

Answer 4

https://code.sololearn.com/cgwX2ZC6WIEo/?ref=app

I found a way to generate a 4 digit number but it won't work the same in a class and I don't know why

I suppose you could also do something along the lines of multiplying a number by 10 and adding a random digit
For example, 23*10+3=233

and make the random digit a random number, but I haven't really tried that yet.

Answer 5

If you can get it to work I'll be impressed lol

Answer 6

Almost forgot to post the working code lol

https://code.sololearn.com/c3e5bMa0NvlY/?ref=app

This is the one that I can't get to work with my code

Answer 7

Here's a quick implementation I made that generates a unique number between min and max (inclusive).
If a number is generated that has already been generated before it simply selects the next available number and it wraps around, also supports removal in case a human dies.

https://code.sololearn.com/cmz043bu85MW/?ref=app