NSInteger vs int

Question

What is the reason for using NSInteger vs int in iPhone programming? Thanks.

Answer 1

An NSIntegeris just a typedef with the following definition:

#if __LP64__ || NS_BUILD_32_LIKE_64
  typedef long NSInteger;
  typedef unsigned long NSUInteger;
#else
  typedef int NSInteger;
  typedef unsigned int NSUInteger;
#endif

Since typedef is defined differently on the platform, you can use it NSIntegerregardless of the platform.