Printf and Scanf

try:
http://msdn.microsoft.com/library/default.asp?URL=/library/wcedoc/wcecrt/crt2_88.htm

If you are using Microsoft VC, and you have the MSDN installed you can also find it there.

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¨„...printf functions&#9616;     <CONIO.H, STDIO.H>
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Declaration:
 ¡ö int cprintf (const char *format [, argument, ...]);
 ¡ö int fprintf (FILE *stream, const char *format [, argument, ...]);
 ¡ö int printf  (const char *format [, argument, ...]);
 ¡ö int sprintf (char *buffer, const char *format [, argument, ...]);
 ¡ö int vfprintf(FILE *stream, const char *format, va_list arglist);
 ¡ö int vprintf (const char *format, va_list arglist);
 ¡ö int vsprintf(char *buffer, const char *format, va_list arglist);

Use:
 ¡ö cprintf  sends formatted output to the text window on the screen
 ¡ö fprintf  sends formatted output to a stream
 ¡ö printf   sends formatted output to stdin
 ¡ö sprintf  sends formatted output to a string
 ¡ö vfprintf sends formatted output to a stream, using an argument list
 ¡ö vprintf  sends formatted output to stdin, using an argument list
 ¡ö vsprintf sends formatted output to a string, using an argument list

This might be a little bit easier to read... ;)

...printf functions     <CONIO.H, STDIO.H>

Declaration:
int cprintf (const char *format [, argument, ...]);
int fprintf (FILE *stream, const char *format [, argument, ...]);
int printf  (const char *format [, argument, ...]);
int sprintf (char *buffer, const char *format [, argument, ...]);
int vfprintf(FILE *stream, const char *format, va_list arglist);
int vprintf (const char *format, va_list arglist);
int vsprintf(char *buffer, const char *format, va_list arglist);

Use:
cprintf  sends formatted output to the text window on the screen
fprintf  sends formatted output to a stream
printf   sends formatted output to stdin
sprintf  sends formatted output to a string
vfprintf sends formatted output to a stream, using an argument list
vprintf  sends formatted output to stdin, using an argument list
vsprintf sends formatted output to a string, using an argument list

printf is for print an out on the screen
scanf is for receive an input for the user

To add to Ready4Dis:

All 'w' functions are the same as the one without the w but for wide characters (unicode)

-----------------------------------------------------
// wchar_t printf functions

int fwprintf (FILE *stream, const wchar_t *format [, argument, ...]);
int wprintf  (const wchar_t *format [, argument, ...]);
int swprintf (wchar_t *buffer, const wchar_t *format [, argument, ...]);
int vfwprintf(FILE *stream, const wchar_t *format, va_list arglist);
int vwprintf (const wchar_t *format, va_list arglist);
int vswprintf(char *buffer, const wchar_t *format, va_list arglist);
---------------------------------------------------------
// scanf functions

// scanf,wscanf: Read formatted data from the standard input stream.
int scanf( const char *format [,argument]... );
int wscanf( const wchar_t *format [,argument]... );

// sscanf,swscanf: Read formatted data from a string.
int sscanf( const char *buffer, const char *format [, argument ] ... );
int swscanf( const wchar_t *buffer, const wchar_t *format [, argument ] ... );

// fscanf, fwscanf: Read formatted data from a stream.

int fscanf( FILE *stream, const char *format [, argument ]... );
int fwscanf( FILE *stream, const wchar_t *format [, argument ]... );
----------------------------------------------------------

Ready4Dis mentioned cprintf. This is not an ANSI function. I believe it is a GNU/Unix function, and there is probably a csanf on that platform. In VC, it is _cprintf and _cscanf:
int _cprintf( const char *format [, argument] ... );
int _cscanf( const char *format [, argument] ... );

----------------------------------------------------------
You mention wsprintf. This is not an ANSI function. There is a Windows function with that name. The win functions are:

int wsprintf(LPTSTR lpOut, LPCTSTR lpFmt, ...);
int wvsprintf(LPTSTR lpOutput, LPCTSTR lpFormat, va_list arglist);

These are equivalents of sprintf and wvsprintf, but use LPTSTR and LPCTSTR instead of char* and const char*. LPTSTR and LPCTSTR are TCHAR* and const TCHAR*, where TCHAR is defined as either a char or WCHAR (wchar_t), depending on compiler setup.

>>are the difference between wsprintf() and sprintf()?  
For Windows programmers difference only one:
wsprintf don't undestand float formats. Usually, if I must
fprm buffer in Windows I use wsprintf: works mode speed
and don't use place in code, but fot print float data you
MUST use fprintf.

I could find out all the declarations (since VC++6.0 shows it to you while typing it out).
I might not be getting this correctly: wprintf/wscanf is for wide characters, fprintf/fscanf is for floating points, what are vprintf/vscanf, sprintf and wsprintf, etc.  I wanted to know what each prefix stands for.  Alex's answer is the closest answer to what I want.

OK, I guess I more or less understand it now!  Thanks!