What is an Internet app?

I read that C++ can be used to program Internet.

Does it mean Internet apps? Bcos I dun think Browsers can execute programs, except Java applets and ActiveX plugins.

Does "C++ can be used to program Internet" mean writing client programs to connect to web server programs to process something?

Thanks.

Remeber that the web/HTTP is only a tiny part of the internet. I'd say an internet app is anything that uses sockets/TCPIP - ex: a web browser, an FTP client, a chat program, a Napster clone, etc.