Name the most important data types in Objective-C?

1.	Name the most important data types in Objective-C?
Answer» Following are DATA types that the DEVELOPERS mostly use in Objective – C: BOOL: REPRESENTS a Boolean value that is either true or false. Both the _Bool or BOOL keywords is valid. Example: _Bool flag = 0; BOOL secondflag = 1; NSInteger: Represents an Integer. Example: typedef long NSInteger; typedef int NSInteger; NSUInteger: Represents an unsigned integer. Example: typedef unsigned long NSUInteger; typedef unsigned int NSUInteger; NSString: Represents a string. Example: NSString *greeting = @"Hello";

Answer»

Following are DATA types that the DEVELOPERS mostly use in Objective – C:

BOOL: REPRESENTS a Boolean value that is either true or false. Both the _Bool or BOOL keywords is valid.
- Example:
  _Bool flag = 0;
  BOOL secondflag = 1;
NSInteger: Represents an Integer.
- Example:
  typedef long NSInteger;
  typedef int NSInteger;
NSUInteger: Represents an unsigned integer.
- Example:
  typedef unsigned long NSUInteger;
  typedef unsigned int NSUInteger;
NSString: Represents a string.
- Example:
  NSString *greeting = @"Hello";

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