[russo666]

I'm not sure if I correctly understood your question, but here is goes:

Код:

Example: 
For the file helloworld.cpp in the folder C:\docs\hello enter the command

         cd c:\docs\hello

Now type the compile command

         g++ helloworld.cpp -o helloworld.exe

The -o switch defines the name of the output file, without it the output file would be a.exe.

Remember to change the extension.

Source: http://www.mingw.org/wiki/MinGWforFirstTimeUsers