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+++
title = 'C/C++'
+++
* [Preprocessor Definitions](#preprocessor-definitions)
* [Platform detection](#platform-detection)
* [Compiler detection](#compiler-detection)
* [Architecture detection](#architecture-detection)
* [GCC pragmas](#gcc-pragmas)
* [MSVC pragmas](#msvc-pragmas)
* [Standard Headers](#standard-headers)
## Preprocessor Definitions
* [predef wiki](https://github.com/cpredef/predef)
### Platform detection
```
#ifdef _WIN32
// Windows
#endif
#ifdef __APPLE__
// Apple - flags for specific devices defined in <TargetConditionals.h>
#endif
#ifdef __linux__
// Linux
#endif
```
### Compiler detection
```
#ifdef __GNUC__
// GCC
#endif
#ifdef __clang__
// clang
#endif
#ifdef _MSC_VER
// Visual C
#endif
```
### Architecture detection
```
#if (defined(_MSC_VER) && _M_X64) || (defined(__GNUC__) && __amd64__)
// x86-64
#endif
#if (defined(_MSC_VER) && _M_ARM64) || (defined(__GNUC__) && __aarch64__)
// arm64
#endif
```
### GCC pragmas
```
// Push/pop warning state
#pragma GCC diagnostic push
#pragma GCC diagnostic pop
// Disable a warning
#pragma GCC diagnostic ignored "-Wunused-variable"
```
### MSVC pragmas
```
// Link against abc.lib
#pragma comment(lib, "abc.lib")
// Push/pop warning state
#pragma warning(push)
#pragma warning(pop)
// Disable a warning
#pragma warning(disable: 4996)
```
## Standard Headers
* [C standard headers](https://en.cppreference.com/w/c/header.html)
* [C++ standard headers](https://en.cppreference.com/w/cpp/header.html)
#
* [assert.h](https://en.cppreference.com/w/c/header/assert.html)
* [complex.h](https://en.cppreference.com/w/c/header/complex.html)
* [ctype.h](https://en.cppreference.com/w/c/header/ctype.html)
* [errno.h](https://en.cppreference.com/w/c/header/errno.html)
* [fenv.h](https://en.cppreference.com/w/c/header/fenv.html)
* [float.h](https://en.cppreference.com/w/c/header/float.html)
* [inttypes.h](https://en.cppreference.com/w/c/header/inttypes.html)
* [iso646.h](https://en.cppreference.com/w/c/header/iso646.html)
* [limits.h](https://en.cppreference.com/w/c/header/limits.html)
* [locale.h](https://en.cppreference.com/w/c/header/locale.html)
* [math.h](https://en.cppreference.com/w/c/header/math.html)
* [setjmp.h](https://en.cppreference.com/w/c/header/setjmp.html)
* [signal.h](https://en.cppreference.com/w/c/header/signal.html)
* [stdalign.h](https://en.cppreference.com/w/c/header/stdalign.html)
* [stdarg.h](https://en.cppreference.com/w/c/header/stdarg.html)
* [stdatomic.h](https://en.cppreference.com/w/c/header/stdatomic.html)
* [stdbit.h](https://en.cppreference.com/w/c/header/stdbit.html)
* [stdbool.h](https://en.cppreference.com/w/c/header/stdbool.html)
* [stdckdint.h](https://en.cppreference.com/w/c/header/stdckdint.html)
* [stddef.h](https://en.cppreference.com/w/c/header/stddef.html)
* [stdint.h](https://en.cppreference.com/w/c/header/stdint.html)
* [stdio.h](https://en.cppreference.com/w/c/header/stdio.html)
* [stdlib.h](https://en.cppreference.com/w/c/header/stdlib.html)
* [stdmchar.h](https://en.cppreference.com/w/c/header/stdmchar.html)
* [stdnoreturn.h](https://en.cppreference.com/w/c/header/stdnoreturn.html)
* [string.h](https://en.cppreference.com/w/c/header/string.html)
* [tgmath.h](https://en.cppreference.com/w/c/header/tgmath.html)
* [threads.h](https://en.cppreference.com/w/c/header/threads.html)
* [time.h](https://en.cppreference.com/w/c/header/time.html)
* [uchar.h](https://en.cppreference.com/w/c/header/uchar.html)
* [wchar.h](https://en.cppreference.com/w/c/header/wchar.html)
* [wctype.h](https://en.cppreference.com/w/c/header/wctype.html)
|
