The Tutorial shows you How to Install and Getting-Started with the Latest Eclipse 2022-03 R IDE C/C++ for Linux DescentOs 3.0.2 Mate Precise Pangolin Unity Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the DescentOS 3 is Based on Ubuntu Linux Precise apt Repositories that are still Back to Eclipse 3.7.
So at the Moment if you want Install the Latest Eclipse 2022-03 R Build on Linux DescentOs 3.0.2 Mate you will Need to Download and Install Eclipse 2022-03 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 Eclipse C/C++ Oxygen R IDE:
Eclipse 2022-03 R IDE C/C++ Linux -
Double-Click on Archive and Extract Eclipse into /tmp
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Open a Terminal Window
(Press “Enter” to Execute Commands) -
Install the Gnu C++ Compiler for Ubuntu Based
sudo su
If Got “User is Not in Sudoers file” then see: How to Enable sudo
apt-get install g++
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Relocating Eclipse.
sudo chown -R root:root /tmp/eclipse && mv /tmp/eclipse /opt/
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Starting Eclipse from Terminal.
Making a Symlink
ln -s /opt/eclipse/eclipse /usr/local/bin/eclipse
After you can Start Eclipse from Terminal simply with:
eclipse
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Create an Eclipse Desktop Launcher for Easy-Starting:
Mate App Launcher How-to -
Eclipse C++ Getting-Started SetUp & Hello-World:
Tags: DescentOS 3.0.2 Mate, Eclipse, Eclipse 4.4 Luna, Eclipse 4.4 Luna IDE Cpp, Eclipse Luna, Guide, How-to, IDE, Install, Java, JEE, Linux, Linux Desktop, Tutorial, Ubuntu Like, Ubuntu Precise Based