For the problem “program g++ not found in path in eclipse.” I tried to fix it, but it doesn’t work and returns the result I want. Here is my program: "%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\cygnus\cygwin-b20\H-i586-cygwin32\bin\g++" and "Program "g++" not ...