It's a bit sad that the formatting API hasn't improved in C over the years. Take this code, for example:

  printf("Local number: %" PRIdPTR "\n\n", someIntPtr);

which is quite unreadable to say the least. To address this issue I even wrote a small library (https://github.com/cppformat/cppformat) that allows you to write something like this instead:

  print("Local number: {}\n\n", someIntPtr);

It is written in C++ rather than C, because the latter doesn't have facilities (at least overloading is necessary) to implement such library.