How to understand code

Answer 1

When there's a piece of code I don't understand, there are a few things I do.

1) I use the debugger and step through it line by line to try and see what's going on.

2) I may come across one line that confuses me, in which case I try to Google it if I can't understand it myself.

3) I may have some code I do somewhat understand and will change random things about it to see how it affects the program.

Answer 2

You could try using visualize tools available online. You can check what each line of code does.