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I have windows7 operating system and cygwin for linux simulator. i install one program called “Shawn” for network simulator in cygwin (with hard effort). now when i change .cpp file in windows and run ./shawn in cygwin, the output does not change. can anyone help me?
When changing the source files of a program written in a compiled language (like C++) this does not affect the related binary/executable/program/library until it is rebuilt from the updated sources. This is not specific to cygwin, as it happens in native Windows, Linux or any other OS.
So to make the changes in the source code you did appear in the binary, all you have to do is rebuilding it.