You don't even have to go to C99. Microsoft just had a confirming C89 preprocessor implementation for 3 years. [0] [0] https://learn.microsoft.com/en-us/cpp/pr

You don't even have to go to C99. Microsoft just had a confirming C89 preprocessor implementation for 3 years. [0] [0] https://learn.microsoft.com/en-us/cpp/preprocessor/preprocessor-experimental-overview?view=msvc-170 https://learn.microsoft.com/en-us/cpp/preprocessor/preproces...