Similar to cdecl.org, but with broader support for language features. Static web page which supports file protocol. Parsing and to-prose conversion happen in the front-end, resulting in instant feedback.
This is not helpful enough, because the meaning of precision and field width is different for any kind of format specifier. It should be more specific, i.e. it should tell the user:
.*: minimum digit count is read from int argument (fill missing with '0')
For a call
printf("%.*d", x), we get the prose:This is not helpful enough, because the meaning of precision and field width is different for any kind of format specifier. It should be more specific, i.e. it should tell the user: