C And

Objective - C

C is a type of computer programming language. C was originally developed by Dennis Ritchie at AT&T Bell Labs between 1969 and 1973. It has a free-format program source code.

Objective-C is a general-purpose, high-level, object-oriented programming language. It adds Smalltalk-style messaging to the C programming language. As it is a superset of C, everything that is valid C is also valid in Objective-C.

● Objective C keeps all aspects of C

● Objective C adds syntax and semantics that allows for object oriented programming.

● Objective C is object oriented programming whereas, C is procedural programming.

● Objective C incorporates classes, whereas as C doesn’t.

● Objective C allows for division of problems subproblems and submodules that can be developed and tested

individually.

● Objective C allows for delegating methods to other objects and remote invocation, which can be easily implemented

using categories and message forwarding.

● Objective C allows for swizzling of the isa pointer that allows for classes to change at runtime.

● Objective C, like Java, does not support multiple inheritance

● Objective C allows the user to define a protocol by declaring an Objective C class.

● Objective C does allow instance variables (data members) to be set as public, private, or protected.