Expected initializer before '+=' token. SOLVED

Question

I've tried to google this issue but all of the questions were involved with templates. I'm trying to create a ramp-like thingy out of hashtags, but this issue keeps popping up in line 13 where I'm trying to addition nL with itself. I'd appreciate any kind of help and thanks in advance! :) The following code is edited and is not the original script of this question. It has however been fixed and changed a little with help of this question.
https://code.sololearn.com/chuO8mVf7hA6/?ref=app

Answer 1

https://code.sololearn.com/crBRMkBXv7tc/?ref=app

you had already declared nl and symbol as global variables. by declaring them again locally it creates a different version. that version in your code has no value. thus the error re uninitialised

Answer 2

also you need to replace if(i=nL) by if(i==nL)?

Answer 3

Your code is strange, int nL += nL ? 😑 (not to mention, er wrong)

Answer 4

jay figured out what you wanted to do apparently 😂

Answer 5

Karl is correct
i=nL is an accidental assignment

Answer 6

re emtpy boxes -> local declaration of char symbol.. overrides global char symbol.

Answer 7

here is a little article explaining the difference between local and global variables

https://www.funprogramming.org/50-What-are-global-and-local-variables.html

Answer 8

Is that something you can't do?

Answer 9

Strange... I did that first but the output just came up with empty boxes. Thanks a lot though!

Answer 10

Oh ye, rookie mistake. Thanks. xP

Answer 11

Thanks for the hint, Jay. I didn't know that. :)