Conversion Modifiers for scanf()

Introduction

Modifier	Meaning	Example
*	Suppress assignment (see text).	"%*d".
digit(s)	Sets Maximum field width. Input stops when the maximum field width is reached or when the first whitespace character is encountered, whichever comes first.	"%10s".
hh	Read an integer as a signed char or unsigned char .	"%hhd" "%hhu".
ll	Read an integer as a long long or unsigned long long (C99).	"%lld" "%llu".
h,l , or L	Using L instead of l with e , f , and g indicates that the value will be stored in type long double. In the absence of these modifiers, d , i , o , and x indicate type int , and e , f , and g indicate type float .	"%h"
j	When followed by an integer specifier, indicates using the intmax_t or uintmax_t type (C99).	"%jd" "%ju".
z	When followed by an integer specifier, indicates using the type returned by sizeof (C99).	"%zd" "%zo".
t	When followed by an integer specifier, indicates using the type used to represent the difference between two pointers (C99).	"%td" "%tx".

Example,

"%hd" and "%hi" indicate that the value will be stored in a short int .
"%ho" , "%hx" , and "%hu" indicate that the value will be stored in an unsigned short int.
"%ld" and "%li" indicate that the value will be stored in a long .
"%lo" , "%lx" , and "%lu" indicate that the value will be stored in unsigned long.
"%le" , "%lf" , and "%lg" indicate that the value will be stored in type double .