When building software for OS X and iOS, you utilise Objective-C as your primary programming language. It's an object-oriented programming language with a flexible runtime, a specialised version of the C programming language. Objective-C takes C's grammar, primitive types, and flow control statements and adds class and method definition syntax.

It also provides dynamic type and binding and language-level support for object graph management and objects literals, deferring many duties until runtime.

In iOS programming, Objective C is used. It is based on the C programming language and has object-oriented features as well as a dynamic runtime. Structures, pointers, functions, and control flow constructs are included, as are simple types like int, float, and char.

Standard C library routines declared in stdlib.h and stdio.h can also be used. File classes are stated in the interface and specified in the implementation.

There are no objects or variables associated with class methods. They can be directly accessed without the need to create class objects.

Objects Communicate Through Messages

By calling a function on another object in Objective C, one object can convey a message to another object. If you have an object of class XYZPerson named somePerson, you may send it the message sayHello as follows:

Syntax: