The Tutorial shows you How to Install and Getting-Started with the Latest Eclipse 2023-03 R IDE C/C++ for Linux Xubuntu 13.04 Raring Ringtail i386/Amd64 Xfce Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the Ubuntu Linux Raring apt Repositories from which Linux Xubuntu Raring Depends are still Back to Eclipse 3.8.
So at the Moment if you want Install the Latest Eclipse 2023-03 R Build on Linux Xubuntu 13.04 you will Need to Download and Install Eclipse 2023-03 R C/C++ Development Release for Linux.
Hence, here we Proceed Directly to Download and Installation of the Whole Eclipse for C/C++ Development Linux Release.
The Content give Focus Only to the Essentials Instructions and Commands to make it Easier to Follow.
Finally, to the article Bottom you find a Link to Create a Launcher and Hello-World Application Quick Starting.

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Download Latest Eclipse C/C++ for Linux:
Eclipse 2023-03 R IDE C/C++ Linux