UTF-8沒有跨平臺問題，存成UTF-8 BOM 或者visual studio 里另存為-> save with encoding ->Unicode(UTF-8 with signature) 就可以了。見https://docs.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-1-c4819?view=msvc-160
VisualStudio 編譯警告 C4819 warning1.現象 編譯C++代碼，出現如下編譯警告: warning C4819: The file contains a character that cannot be repr...