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- Use of #pragma in C - Stack Overflow
64 #pragma is used to do something implementation-specific in C, i e be pragmatic for the current context rather than ideologically dogmatic The one I regularly use is #pragma pack(1) where I'm trying to squeeze more out of my memory space on embedded solutions, with arrays of structures that would otherwise end up with 8 byte alignment
- Difference between #pragma and _Pragma() in C - Stack Overflow
Pragma directives specify machine- or operating-specific compiler features The __pragma keyword, which is specific to the Microsoft compiler, enables you to code pragma directives within macro definitions
- What does #pragma once mean in C? - Stack Overflow
In the C and C++ programming languages, #pragma once is a non-standard but widely supported preprocessor directive designed to cause the current source file to be included only once in a single compilation Thus, #pragma once serves the same purpose as #include guards, but with several advantages, including: less code, avoiding name clashes, and improved compile speed See the Wikipedia
- c - Utilidade do #pragma - Stack Overflow em Português
Vários códigos em C C++ possuem a palavra pragma Dependendo do jeito que que é implementada tem uma função diferente #pragma once #pragma pack() #pragma comment(xx, "") Para qual finalidade o
- What is __pragma and what are the differences between __pragma and #pragma
15 #pragma is a preprocessor directive in its own right; it can't be used within a #define directive So, this is why __pragma exists: it provides a way for a pragma to be issued from wherever the macro that uses it is expanded This is a non-standard compiler extension (MSVC, Intel, and some C compilers support it to varying degrees)
- c - #pragma pack effect - Stack Overflow
I was wondering if someone could explain to me what the #pragma pack preprocessor statement does, and more importantly, why one would want to use it I checked out the MSDN page, which offered some
- What does #pragma comment mean? - Stack Overflow
#pragma comment is a compiler directive which indicates Visual C++ to leave a comment in the generated object file The comment can then be read by the linker when it processes object files #pragma comment(lib, libname) tells the linker to add the 'libname' library to the list of library dependencies, as if you had added it in the project properties at Linker->Input->Additional dependencies
- Whats difference between #pragma and #ifndef? [duplicate]
Use of any #pragma that is not defined in the C (or C++) standard renders your code non-portable #pragma once is a bit of an exception in that it is one of the most commonly-implemented of the non-standard #pragma constructs Its implementation, however, is not universal across standards-compliant compilers #ifndef is
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