The basic types available C are listed.

  1. int - for storing whole numbers like 1,2,3 -1, 34.
  2. float - for storing decimal numbers.
  3. double - for storing decimal numbers with double precision.
  4. char - for storing single character.

Objective-C has all the types available in C.

Objective C basic types

The list of commonly used Objective C specific types are listed below.

  1. NSInteger - for storing whole numbers like 1,2,3 -1, 34.
  2. CGfloat - for storing decimal numbers.
  3. BOOL - for storing YES or NO.
  4. NSNumber - for storing decimal numbers with double precision.
  5. NSString - for storing group of characters(string).
  6. NSMutableString - for storing mutable group of characters(string).
  7. NSDictionary - for storing key value pairs.
  8. NSMutableDictionary - for storing mutable key value pairs(can be modified).
  9. NSArray - for storing array of objects.
  10. NSMutableArray - for storing mutable array of objects.
  11. NSSet - for storing set.
  12. NSMutableset - for storing mutable set.
  13. NSCountedSet - for storing counted set.
  14. NSOrderedSet - for storing ordered set.
  15. NSDate - for storing date.