C语言是由Dennis Ritchie在 1970 年代初期为UNIX操作系统开发的。它是一种通用的过程编程语言。该语言用于开发系统应用程序以及桌面应用程序。要了解有关 C 语言的更多信息，请参阅 https://www。极客们。 org/c-编程语言/
Objective C是由Brad Cox和Tom Love在 1980 年代早期开发的。它是一种面向对象的通用语言，旨在为 C 编程语言提供小型谈话风格的消息传递。这种语言允许用户通过声明类来定义协议，数据成员可以是公共的、私有的和受保护的。这种语言在 Apple 用于iOS和OS X操作系统。苹果公司于 2014 年开发了 Swift 语言来取代这种语言。但是仍然有很多公司在维护用目标 C 编写的遗留应用程序。
The main difference in C and Objective C is that C is a procedure programming language which doesn’t support the concepts of objects and classes and Objective C is Object-oriented language which contains the concept of both procedural and object-oriented programming languages.
C和Objective C的区别：
| C Language | Objective C |
|---|---|
| It is a procedure oriented programming language. Problems are solved step by step fashion. | Objective c is an object-oriented programming language. It adds syntax and semantics that allows for an object oriented language. But it doesn’t support multiple inheritance property. |
| C language can be called the subset of Objective C | Objective C can be called the super set of C language. It contains classes and objects in addition to C language. |
| The pointers used in C language are vulnerable to security attacks. | The language objective C uses null pointers and hence is type safe compared to C. |
| It is basically a low level language that stands too close to assembly level language. | Objective C is a high-level language stuffed with small talk messaging style together with C. |
| C language doesn’t incorporate any classes. Bjarne Stroustrup developed the C++ language with the main intent of adding object oriented features like class to the C language. | Objective C is object-oriented language and incorporates classes and offers dynamic runtime. |
| It follows the top-down programming approach. | It follows the bottom-up programming approach. |
| In this language big program code is divided into small pieces of code which is called functions. | In this language big program code is divided into smaller codes which is called Objects and Classes. |
| It supports only pointers. | It supports both pointers and references. |
| Variables should be declared at the beginning of the program. | In this language variable can be declared anywhere in the program. |
| C language doesn’t support the exception handling. | Objective C supports the exception handling which can be implement using catch and try blocks. |
| C doesn’t allow to define the function with default arguments. | It allows to define function with default arguments. |
| C can not run the code of Objective C. | Objective C can run the code of C language. |
| C provides malloc() and calloc() functions for dynamic memory allocation, and free() for memory de-allocation. | Objective C provides new operator for memory allocation and delete operator for memory de-allocation. |
| Data is not secured in C language. | Using the concept of encapsulation, security can be achieved in Objective C. |
| It doesn‘t have the provision of inline function. | It supports the inline function. |
| C does not support function and operator overloading. | Objective C supports the function and operator overloading. |
| In general it’s known as function-driven language. | It’s known as object driven language. |
| It doesn’t supports the encapsulation, Data hiding, inheritance, polymorphism and abstraction. | Encapsulation, Data hiding, inheritance, polymorphism and abstraction are the key features of the Objective C. |
| C language doesn’t supports the templates. | Objective C supports the templates. |
| It’s good for embedded services. | It’s good for networking, gaming etc. |
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