How do I know my CPP version?

Well, you could try running the ide, (otherwise known as the compiler program you’re using to create your C++ programs), and check for an “About” section in the top menu. That should tell you the name of the program, the version date and even the build date. Compiler’s usually come with some sort of documentation.

How do I know if C++ is installed on Ubuntu?

Confirm your installation by checking for GCC version: $ g++ –version g++ (Ubuntu 7.2.