The difference between Nsinteger, Nsuinteger, and int

• int has a different maximum value and occupies a different number of digits at 32bit and 64bit.
• With Nsinteger, the system returns the maximum value of int based on the current environment (32bit or 64bit).
• Nsuinteger is an unsigned form of nsinteger.
• Nsinteger is not an object, it is a typedef of the base data type, and the formatted string uses%li.

  
 

   
  

  
#if __LP64__ || (TARGET_OS_EMBEDDED && !TARGET_OS_IPHONE) || TARGET_OS_WIN32 || NS_BUILD_32_LIKE_64
   
  

  
typedef long NSInteger;
   
  

  
typedef unsigned long NSUInteger;
   
  

  
#else
   
  

  
typedef int NSInteger;
   
  

  
typedef unsigned int NSUInteger;
   
  

  
#endif
  
 

The difference between Nsinteger, Nsuinteger, and int