@node SCN, stdio
@subheading Syntax

@example
#include <inttypes.h>
@end example

@subheading Description

The @code{SCN} family of macros allows integers to be input
in a portable manner using the @code{scanf} family of functions
(@pxref{scanf}).  They include a conversion qualifier, to specify
the width of the type (e.g.: @code{l} for @code{long}),
and the conversion type specifier (e.g.: @code{d} for decimal
display of integers).

The @code{SCN} family of macros should be used with the types defined
in the header @code{<stdint.h>}.  For example: @code{int8_t},
@code{uint_fast32_t}, @code{uintptr_t}, @code{intmax_t}.

Below @var{N} can be 8, 16, 32 or 64.  The @code{SCN} macros are:

@table @code

@item SCNd@var{N}
@itemx SCNi@var{N}

The @code{d} and @code{i} type conversion specifiers
for a type @code{int@var{N}_t} of @var{N} bits.

@item SCNdLEAST@var{N}
@itemx SCNiLEAST@var{N}

The @code{d} and @code{i} type conversion specifiers
for a type @code{int_least@var{N}_t} of @var{N} bits.

@item SCNdFAST@var{N}
@itemx SCNiFAST@var{N}

The @code{d} and @code{i} type conversion specifiers
for a type @code{int_fast@var{N}_t} of @var{N} bits.

@item SCNdMAX
@itemx SCNiMAX

The @code{d} and @code{i} type conversion specifiers
for a type @code{intmax_t}.

@item SCNdPTR
@itemx SCNiPTR

The @code{d} and @code{i} type conversion specifier
for a type @code{intptr_t}.

@item SCNo@var{N}
@itemx SCNu@var{N}
@itemx SCNx@var{N}

The @code{o}, @code{u} and @code{x} type conversion specifiers
for a type @code{uint@var{N}_t} of @var{N} bits.

@item SCNoLEAST@var{N}
@itemx SCNuLEAST@var{N}
@itemx SCNxLEAST@var{N}

The @code{o}, @code{u} and @code{x} type conversion specifiers
for a type @code{uint_LEAST@var{N}_t} of @var{N} bits.

@item SCNoFAST@var{N}
@itemx SCNuFAST@var{N}
@itemx SCNxFAST@var{N}

The @code{o}, @code{u} and @code{x} type conversion specifiers
for a type @code{uint_FAST@var{N}_t} of @var{N} bits.

@item SCNoMAX
@itemx SCNuMAX
@itemx SCNxMAX

The @code{o}, @code{u} and @code{x} type conversion specifiers
for a type @code{uintmax_t}.

@item SCNoPTR
@itemx SCNuPTR
@itemx SCNxPTR

The @code{o}, @code{u} and @code{x} type conversion specifiers
for a type @code{uintptr_t}.

@end table

@subheading Return Value

Not applicable.

@subheading Portability

@portability !ansi-c89, ansi-c99, !posix-1003.2-1992, posix-1003.1-2001

@subheading Example

@example
intmax_t m;
int ret;

ret = sscanf("0x1000", "%" SCNxMAX, &m);
@end example