If your ERROR in WINDOWS after going gcc --version is this

'gcc' is not recognized as an internal or external command,
operable program or batch file.

then you need to set the environment path: Normally, gcc is installed in

C:\MinGW\bin

Copy this C:\MinGW\bin and go to this Edit the system environment and this to Path and paste there and hit ok

Now open cmd (Run as administrator)

Type gcc --version