Hi, Take a look at this paper: https://cacm.acm.org/blogcacm/21st-century-c/ HTH, Ian -- -- ACCU - Professionalism in programming - http://www.accu.org -- My writing - https://sites.google.com/site/ianbruntlett/ -- Free Software page - https://github.com/ian-bruntlett/TECH-Manuals/blob/main/tm-free-software.md