The printf family of functions also runs a mini-interpreter that has its cost, because its main use is interpolation (the % placeholders). Some compilers can su

The printf family of functions also runs a mini-interpreter that has its cost, because its main use is interpolation (the % placeholders). Some compilers can substitute them for more efficient versions (e.g. printf without any % in the format string -> puts). I don't know if they can detect and substitute an snprintf with a "%s%s" format string.