Multiple inclusion. What would happen if it is allowed?

Asked Jan 08 '16 at 16:29

Active Jun 03 '16 at 11:09

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I'm new to C++ and have been through a lot of articles about multiple inclusion resolutions. I have come across both MACRO and #pragma once method, even experimented them by myself to solve compile time error. However, none of them mention the possible problems caused by them.

What would happen if multiple inclusion is allowed?

edited Jun 03 '16 at 11:09

Brian Tompsett - 汤莱恩

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asked Jan 08 '16 at 16:29

Sithideth Bouasavanh

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Thank you for the link. I have read already, I couldn't find the answer though. – Sithideth Bouasavanh Jan 08 '16 at 16:50
Multiple inclusion **is** allowed. Duplicating definitions, which is one of the common consequences of multiple inclusion, is not allowed. – Pete Becker Jan 08 '16 at 20:09

Multiple inclusion. What would happen if it is allowed?

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