I suggest looking at some of Google's open sourced projects. - Abseil: https://github.com/abseil/abseil-cpp https://github.com/abseil/abseil-cpp https://cs.ope

I suggest looking at some of Google's open sourced projects. - Abseil: https://github.com/abseil/abseil-cpp https://github.com/abseil/abseil-cpp https://cs.opensource.google/abseil https://cs.opensource.google/abseil - Tensorflow: https://github.com/tensorflow/tensorflow/tree/master/tensorflow/core/example https://github.com/tensorflow/tensorflow/tree/master/tensorf... https://cs.opensource.google/tensorflow https://cs.opensource.google/tensorflow - Chrome https://chromium.googlesource.com/chromium/src.git/+/refs/heads/master https://chromium.googlesource.com/chromium/src.git/+/refs/he... https://source.chromium.org/chromium https://source.chromium.org/chromium There is a very high bar for C++ code quality at Google, and also a published style / best practices guide as well as a code search engine to browse the code more easily.