Comment by chiffre

(1) Visual Studio Code - I work with it on Debian & Ubuntu versions from 16.04 to 20.04, also works well with WSL/Ubuntu on Windows;

(2) + C/C++ extension for VSCode from Microsoft (installed separately);

(3) + sudo apt-get install clang-format.

  You may want to adjust some settings e.g. set C_Cpp.default.cppStandard to C++17.