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c-file include header-file twice

Frank Bering

I work with the MDK version from Keil... In my project I've got three separate c-files with their own header-files.

I can see all three c-files in the project workspace with their included header-files. So far so good, but I don't know why some c-files include one and the same header-file twice?

I don't include any header-file twice. In one header-file I use one extern variable declaration (not definition). I use this variable in two c-files. In on e of them (without the declaration) - µvision included this header-file twice. What's the specific reason for this property?

thanks in advance
Frank

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