What is the Difference Between C and Objective C?

The main difference between C and Objective-C is that C is a procedural programming language, while Objective-C is an object-oriented programming (OOP) language that is a superset of C. Here are some key differences between the two:

Object-Oriented Programming: Objective-C has an object-oriented class system, which is not present in C. This means that C lacks the concepts of objects and classes.
Memory Management: C provides malloc() and calloc() functions for dynamic memory allocation, and free() for memory de-allocation. In contrast, Objective-C uses a new operator for memory allocation and a delete operator for memory de-allocation.
Exception Handling: Objective-C supports exception handling using catch and try blocks, while C does not.
Function Definitions: Objective-C allows functions to have default arguments, while C does not.
Runtime Message Passing: In Objective-C, a message is sent to the class at runtime and resolved while the application is running, giving the called method complete control over how to handle the action.
Usage: C is a general-purpose language for Unix systems, typically used to build system applications and desktop apps. Objective-C, on the other hand, is primarily used for building iOS apps and macOS applications.

Despite these differences, there is a high degree of similarity between C and Objective-C in terms of syntax, which means that knowing C can help you learn Objective-C more easily.