Technical annex

If you read this book much after 2024, this technical annex should not concern you: you should have a development framework at your disposal that implements C23 without fault. If not, you might have some difficulties because one or another feature of C23 is not yet implemented. The following site tracks the progress of C23 conformance of several toolchains: https://en.cppreference.com/w/c/compiler_support.

My personal experience with programming in C is almost entirely acquired in the realm of open source projects and open source compilers (gcc and clang) and on specific operating systems—namely, POS (2009) in its incarnation as glibc/Linux and musl/Linux. If this is not your setting, and you encounter severe problems with the code in this book, you’ll have to search the web for solutions, as I and the remainder of this annex will probably not be of much help.