Encoding of lexical file and it generates flex.cpp file about winflexbison HOT 4 OPEN

Sorry I don't know how to use UTF-8 input for flex.
Try to google this problem.

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This discussion may help you

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This discussion may help you

I have checked it, but I means that the problem maybe in my Visual Studio 2013 settings which i don't know what will impact on Flex output.

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There are 2 ways to make Visual C++ treat source code as UTF-8:

1. add argument /source-charset:utf-8 in the command line (the "command-line" settings in the project)
2. add BOM to the source (.cpp) file

If you want to use utf-8 in both execution charset and source charset, you can add argument /utf-8 in the compiler command line.

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