Specifier | Description | %@
Objective-C object, printed as the string returned by descriptionWithLocale:
if available, ordescription
otherwise. Also works with CFTypeRef
objects, returning the result of theCFCopyDescription
function.
%%
'%'
character
%d
, %D
,%i
Signed 32-bit integer (
int
)
%u
, %U
Unsigned 32-bit integer (
unsigned int
)
%hi
Signed 16-bit integer (
short
)
%hu
Unsigned 16-bit integer (unsigned short
)
%qi
Signed 64-bit integer (long long
)
%qu
Unsigned 64-bit integer (unsigned long long
)
%x
Unsigned 32-bit integer (unsigned int
), printed in hexadecimal using the digits 0–9 and lowercase a–f
%X
Unsigned 32-bit integer (unsigned int
), printed in hexadecimal using the digits 0–9 and uppercase A–F
%qx
Unsigned 64-bit integer (unsigned long long
), printed in hexadecimal using the digits 0–9 and lowercase a–f
%qX
Unsigned 64-bit integer (unsigned long long
), printed in hexadecimal using the digits 0–9 and uppercase A–F
%o
, %O
Unsigned 32-bit integer (unsigned int
), printed in octal
%f
64-bit floating-point number (double
)
%e
64-bit floating-point number (double
), printed in scientific notation using a lowercase e to introduce the exponent
%E
64-bit floating-point number (double
), printed in scientific notation using an uppercase E to introduce the exponent
%g
64-bit floating-point number (double
), printed in the style of %e
if the exponent is less than –4 or greater than or equal to the precision, in the style of %f
otherwise
%G
64-bit floating-point number (double
), printed in the style of %E
if the exponent is less than –4 or greater than or equal to the precision, in the style of %f
otherwise
%c
8-bit unsigned character (unsigned char
), printed by NSLog()
as an ASCII character, or, if not an ASCII character, in the octal format \\ddd
or the Unicode hexadecimal format \\?
, where d
is a digit
%C
16-bit Unicode character (unichar
), printed by NSLog()
as an ASCII character, or, if not an ASCII character, in the octal format \\ddd
or the Unicode hexadecimal format \\?
, where d
is a digit
%s
Null-terminated array of 8-bit unsigned characters. %s
interprets its input in the system encoding rather than, for example, UTF-8.
%S
Null-terminated array of 16-bit Unicode characters
%p
Void pointer (void *
), printed in hexadecimal with the digits 0–9 and lowercase a–f, with a leading0x
%L
Length modifier specifying that a following a
, A
, e
, E
, f
, F
, g
, or G
conversion specifier applies to along double
argument
%a
64-bit floating-point number (double
), printed in scientific notation with a leading 0x
and one hexadecimal digit before the decimal point using a lowercase p
to introduce the exponent
%A
64-bit floating-point number (double
), printed in scientific notation with a leading 0X
and one hexadecimal digit before the decimal point using a uppercase P
to introduce the exponent
%F
64-bit floating-point number (double
), printed in decimal notation
%z
Length modifier specifying that a following d
, i
, o
, u
, x
, or X
conversion specifier applies to asize_t
or the corresponding signed integer type argument
%t
Length modifier specifying that a following d
, i
, o
, u
, x
, or X
conversion specifier applies to aptrdiff_t
or the corresponding unsigned integer type argument
%j
Length modifier specifying that a following d
, i
, o
, u
, x
, or X
conversion specifier applies to aintmax_t
or uintmax_t
argument