Question: cygwin how to compile c++ programs?
Answer: Download this "Hello World" test program (hello.cpp), save it in your "Cygwin Home" (see Part One): ... 
Run cygwin.
Type "ls" and enter, or "ls -l" and enter. ... 
Type the following command, and press enter: ... 
Type "ls" and enter, or "ls -l" and enter. ... 
Try typing either of the following and press enter: