Are Nested Header Files Possible in C?

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SUMMARY

Nesting header files in C is permissible and functional, as confirmed by multiple contributors in the discussion. However, excessive nesting can lead to confusion and increased compile times. To prevent issues such as multiple inclusions of the same header file, it is essential to implement include guards using the preprocessor directives #ifndef, #define, and #endif, or alternatively, utilize the #pragma once directive if supported by the compiler.

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I was wondering if nested header files are achievable in C? I tried placing #include "header.h" inside a header file but I don't think it worked. thanks.
 
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Yes, that is allowed and it should work.
 
It does work, although it should be reduced as much as possible.
It's confusing and leads to long compile times.

To avoid problems of a header being included twice in a . cfile through differnet routes you should put include guards around it.
Code: 
#ifndef NAME_OF_HEADER_H
#define NAME_OF_HEADER_H

... rest of header file

#endif

or if your compiler supports it, just put "#pragma once" at the top of the file
 

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