C/C++ Header Guard Generator
C/C++ Header Guard Generator: Sanitizes path delimiters into uppercase tokens and formats `#ifndef / #define` preprocessor guards.
About this c/c++ header guard generator
Sanitizes path delimiters into uppercase tokens and formats `#ifndef / #define` preprocessor guards Transforms and validates developer data structures locally, preventing confidential payload exposure during data wrangling.
Syntax parsing & data transformation logic
Reads a header filename or path, replaces separators and non-identifier characters with underscores, uppercases the guard, then emits a fixed #ifndef/#define/#endif header-guard text block.
Worked conversion & output example
Scenario: Generate a header guard for a hyphenated include path.
Sample input:
Processing: Replace path separators and punctuation, uppercase the macro, then emit matching preprocessor lines.
Illustrative output:
Syntax constraints & input size limits
It generates text only and does not inspect existing macros or files. Different names can normalize to the same guard; no project-wide uniqueness or reserved-identifier check is performed.
Data conversions and formatting in C/C++ Header Guard Generator reflect standard structured syntax. Verify parsed outputs against your target runtime before deployment.
Local client execution boundary
Data parsing and transformations in C/C++ Header Guard Generator execute in the local browser tab without remote data transmission.
Data format specifications & language standards
Data interchange formats and language grammar specifications:
- Standard Browser Web API / Algorithm Implementation (No single external RFC/ISO standard)
C/C++ Header Guard Generator verification · Audit standards
How to use it
- Enter a header filename or path; blank input defaults to `header.h`.
- Replace path separators and non-identifier characters with underscores, prefix a leading digit and uppercase the guard.
- Read `#ifndef`, `#define` and `#endif` lines around an empty header body.
Frequently asked questions
How does C Header Guard Generator form a macro?+
It trims the file path or substitutes `header.h`, changes slash and backslash to underscores, replaces runs of non-ASCII-identifier characters, prefixes an invalid initial character, then uppercases the result.
Can you show an input and its result?+
Input `include/czoa-tools.h` produces matching `#ifndef INCLUDE_CZOA_TOOLS_H`, `#define INCLUDE_CZOA_TOOLS_H`, and `#endif /* INCLUDE_CZOA_TOOLS_H */` lines. The raw path is not inserted as a comment.
What text does the generator emit?+
It returns a fixed C/C++ preprocessor scaffold: opening `#ifndef`, matching `#define`, and closing `#endif`. The page has one text input and Run locally; it does not read files or inspect a repository.
Which guard issues remain the caller responsibility?+
The sanitization does not determine whether another header already uses the same macro, whether a project requires a naming prefix, whether a compiler accepts a chosen identifier, or whether a supplied path names a real header.