Just how many printf and scanf variants are there?

Question

There are so many different versions of printf and scanf in C that it brings out a chuckle in me. Let's start:

• printf: original implementation; uses format then the values as arguments
• fprintf: the same, but takes a FILE pointer before format
• sprintf: takes a char pointer before format
• snprintf: same as above, but limits size written for buffer overflow safety
• vprintf: like printf but takes a va_list of value arguments
• vfprintf: the va_list equivalent of fprintf
• vsprintf: the va_list equivalent of sprintf
• vsnprintf: the va_list equivalent of snprintf
• asprintf: takes a char ** before format and allocates memory on the pointer
• vasprintf: the same as above, but uses va_list
• scanf: reads format into arguments after it from stdin
• fscanf: takes a FILE pointer before format, reading from it instead
• sscanf: takes a char pointer before format, reading from it instead
• vscanf: the va_list function analogical to scanf
• vfscanf: the va_list function analogical to fscanf
• vsscanf: the va_list function analogical to sscanf

Thanks to dreamlax, the ones that work with wchar_t:

• wprintf: original implementation using wchar_t everywhere that char * was
• fwprintf: writes to a FILE pointer before format, using wchar_t
• swprintf: writes to a char pointer before format, using wchar_t
• vwprintf: writes to stdin, taking a va_list instead of normal arguments
• vfwprintf: writes to a FILE pointer, taking a va_list instead of normal arguments
• vswprintf: writes to a char pointer, taking a va_list instead of normal arguments

Are there any more?

Answer 1

You're missing all of the ones that operate on wchar_t.

Answer 2

While there are a lot, usually all but vfprintf and vfwprintf are simply wrappers for these two which pass an appropriate FILE * (possibly a special one setup for writing to a string instead of to a file on disk) and optionally call va_start and va_end (depending on if they're the "v" version or the plain version.