参考https://stackoverflow.com/questions/44094817/why-is-visual-studio-code-telling-me-that-cout-is-not-a-member-of-std-namespace
Its a <strong>bug</strong>.
There is a workaround for this bug,
go to <code>File -> Preferences -> Settings</code> in VS Code and change <code>"C_Cpp.intelliSenseEngine": "Default"</code> to <code>"C_Cpp.intelliSenseEngine": "Tag Parser"</code>
