source
......\Cygwin_setup
......\............\cygwin_setup.exe
......\Exe
......\...\hello.exe
......\...\hellowin.exe
......\...\mean.exe
......\...\ring.exe
......\Source
......\......\hello.c
......\......\HelloWindows.c
......\......\mean.cpp
......\......\ring_buffer.c