Objective-C – Format Specifier in NSString

Objective-C – Format Specifier in NSString

Ususally we use the Format Specifier in NSLog() to show the debug output. For Example:

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1	NSString* name = @"Yuen Ying Kit";

2	int age = 26;

3	NSLog(@"My name is %@", name);

4	NSLog(@"I am %i years old", age);

You will get a debug output like


List of Format Specifiers

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01	%@     NSString*

02	%d     Signed Integer

03	%i     Signed Integer

04	%u     Unsigned Integer

05	%f     Float / Double

06	%x     Hexidecimal Integer

07	%X     Hexidecimal Integer

08	%o     Octal Integer

09	%zu    size_t

10	%p     Pointer

11	%e     Float / Double (in scientific notation)

12	%g     Float / Double (as %f or %e, based on value)

13	%s     C String

14	%.*s   Pascal String

15	%c     Character

16	%C     Unicode Character

17	%ll    Long Long

18	%llu   Unsigned Long Long

19

%Lf    Long Double

Reference: Eureka!