Unless a variable is shared, each thread will have it's own copy. Full stop.

But...if you assign to an our (global) var prior to spawing a thread that uses that our var, the contents of that our var may no longer be usable.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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In reply to Re: Scope of thread variable by BrowserUk
in thread Scope of thread variable by mr_p

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