Preprocessor Macros: Difference between revisions
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==Include Guard== | ==Include Guard== | ||
For most modern compilers (MS Visual C++, GCC, Clang/llvm), you can just add a <code>#pragma once</code> at the top.<br> | For most modern compilers (MS Visual C++, GCC, Clang/llvm), you can just add a <code>#pragma once</code> at the top.<br> | ||
Note that this is not defined in the standard | Note that this is not defined in the standard but [[Wikipedia: pragma once#Portability]] lists support for most common compilers. | ||
For older compilers: | For older compilers: | ||