There's a lot of great resources out there for learning both Rust and C/C++. That being said, I feel like if nothing else, Rust serves as a great way to teach you the importance of memory safety. This is a skill that translates very well if/when you want to learn C/C++, as well.

If you have memory safety issues in Rust, it just won't compile (with extremely to-the-point compile errors). In C/C++, you might have to debug for a while (especially if you're new) as to why your app is inexplicably misbehaving.