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The C preprocessor implements the macro language used to transform C,
C++, and Objective-C programs before they are compiled. It can also be
useful on its own.
Overview-
- Header Files
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- Macros
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- Conditionals
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- Diagnostics
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- Line Control
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- Pragmas
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- Other Directives
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- Preprocessor Output
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- Traditional Mode
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- Implementation Details
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- Invocation
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- Environment Variables
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- GNU Free Documentation License
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- Option Index
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- Index of Directives
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- Concept Index
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--- The Detailed Node Listing ---
Overview
- Initial processing
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- Tokenization
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- The preprocessing language
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Header Files
- Include Syntax
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- Include Operation
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- Search Path
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- Once-Only Headers
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- Computed Includes
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- Wrapper Headers
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- System Headers
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Macros
- Object-like Macros
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- Function-like Macros
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- Macro Arguments
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- Stringification
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- Concatenation
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- Variadic Macros
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- Predefined Macros
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- Undefining and Redefining Macros
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- Macro Pitfalls
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Predefined Macros
- Standard Predefined Macros
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- Common Predefined Macros
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- System-specific Predefined Macros
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- C++ Named Operators
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Macro Pitfalls
- Misnesting
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- Operator Precedence Problems
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- Swallowing the Semicolon
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- Duplication of Side Effects
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- Self-Referential Macros
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- Argument Prescan
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- Newlines in Arguments
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Conditionals
- Conditional Uses
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- Conditional Syntax
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- Deleted Code
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Conditional Syntax
- Ifdef
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- If
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- Defined
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- Else
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- Elif
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Implementation Details
- Implementation-defined behavior
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- Implementation limits
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- Obsolete Features
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- Differences from previous versions
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Obsolete Features
- Assertions
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- Obsolete once-only headers
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- Miscellaneous obsolete features
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Copyright (C) 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1 or
any later version published by the Free Software Foundation. A copy of
the license is included in the section entitled "GNU Free Documentation
License".
This manual contains no Invariant Sections. The Front-Cover Texts
are (a) (see below), and the Back-Cover Texts are (b) (see below).
(a) The FSF's Front-Cover Text is:
A GNU Manual
(b) The FSF's Back-Cover Text is:
You have freedom to copy and modify this GNU Manual, like GNU
software. Copies published by the Free Software Foundation raise funds
for GNU development.
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