Multiple start and end nodes in control flow graphs

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Can a control flow graph contain multiple start and end nodes? If so, what will happen when multiple start and end nodes contain in a control flow graph? Thanks in advance

What I have tried:

I tried googling but I couldn't find an answer.

Posted 1-Mar-20 18:32pm

Manujaya Premathilaka

Updated 3-Mar-20 1:32am

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Richard Deeming · Answer 1 · 2020-03-03T01:32:00

A CFG is "a representation, using graph notation, of all paths that might be traversed through a program during its execution". (Control-flow graph - Wikipedia[^])

All but the simplest programs are likely to have multiple end nodes.

But a single program will always start at the same point, so I don't see how you could have multiple start nodes.