Pick a directory where you want the IDE to live.
Here is a comprehensive guide on how to find, download, and set up the Eclipse C/C++ Development Tooling (CDT). 1. Where to Find the Eclipse C/C++ Download eclipse c/c++ download
Ensure Xcode Command Line Tools are installed ( xcode-select --install ). Pick a directory where you want the IDE to live
If you eventually want to learn Java, Python, or Web Development, you can add those capabilities to the same IDE. or Web Development