It won't work, modern C is all about being C++ without classes and templates, while coming up with worse approaches (_Generic), apparently.

Now better ways of doing strings and arrays, no need for something as modern as 1976's PL/I way of doing them.

auto is a historic artifact for porting code from the B language to C, when everything was implicitly int but int did not exist yet. It had absolutely no use afterwards, which is why it was repurposed in C++ as well. In C23 this is done because it is very useful in combination with typeof() in macros, which is a far cry from SFINAE terrorism in C++

I have never seen anyone use auto in code newer than the mid-70s, apart from C++ programmers accidentally using it in a case where it happens to work.

It used to be in c++ too and I have never even heard of a conflict this caused