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C++ compiler support : https://en.cppreference.com/w/cpp/compiler_support

 

 

1. Create an empty C++ project
2. Open project properties: Alt + Enter
3. Go to Configuration Properties → C/C++ → Language, and set the C++ Language Standard option to Preview - Features from the Latest C++
4. In the same section, set Enable Experimental C++ Standard Library Modules to Yes (/experimental:module)
5. Go to Configuration Properties → C/C++ → Advanced and set the Compile As option to Compile as C++ Module Internal Partition (/internalPartition)
6. Add header file to your project, which contains an import declaration for every standard library header you want to import. For example:
7. #pragma once import <iostream>; import <array>; import <vector>;
8. Recompile your project
9. Done, now everything should work fine

https://devblogs.microsoft.com/cppblog/a-tour-of-cpp-modules-in-visual-studio/#getting-started-with-modules-in-visual-studio

A Tour of C++ Modules in Visual Studio