C	is a classic low-level procedural programming language Link to original
C++	is a superset of C that is both procedural and object-oriented, while also providing facilities for low-level memory manipulation Link to original
Carbon	https://github.com/carbon-language/carbon-lang is an experimental, general-purpose programming language the project is open-source and was started by Google, following in the footsteps of previous Google-made programming languages (Go and Dart) Google engineer Chandler Carruth first introduced Carbon at the CppNorth conference in Toronto in July 2022. He stated that Carbon was created to be a C++ successor Link to original
Rust	is syntactically similar to C++ but can guarantee memory safety by using a borrow checker to validate references Link to original

Comparisons & When to Use

C vs C++
If you want a reliable, well-supported language with a powerful library, C++ is a good option. You should also use C++ for game development.
If you want code to be very safe and avoid memory leaks, then Rust is the way to go. Rust is better for memory safety and concurrency.

／var／log marcus chiu