C is a procedural programming language that does not support classes and objects which are building blocks of object oriented programming but C++ on the other hand is the combination of procedural and object-oriented programming language. Following points will give you point by point differences between both the languages.
Difference Between C and C++
| C | C++ |
|---|---|
| Developed in 1969 at AT&T Bell Labs by Dennis Ritchie. | Developed in 1979 by Bjarne Stroustrup. |
| It is a subset of the C++ language. | It is a superset of C. You can run most of the C code in C++ but the reverse is not possible. |
| Procedural programming is supported in C. | Procedural and Object-oriented programming is supported. |
| It is a function driven language. | It is an object driven language. |
| Data and functions are separate and free entities. | Data and functions are encapsulated in the form of an object. The class is a blueprint of the object. |
| Does not support information hiding. | Encapsulation hides the data which can be used for information hiding. |
| Multiple Declaration of global variables is allowed. | Multiple Declaration of global variables is not allowed. |
| Function and Operator overloading are not supported. | Function and Operator overloading are supported. |
| Functions can not be defined inside structures. | Functions can be defined inside a structure. |
Namespace the feature is not provided. | Namespace is allowed to avoid name collisions. |
scanf is used for input where printf is used for output. | cin is used for input and cout is used for output. |
Reference variables are not supported. | Reference variables are supported. |
Virtual and Friend functions are not supported. | Virtual and Friend functions are supported. |
malloc() and calloc() functions are used for dynamic memory allocation whereas free() the function is used for memory de-allocation. | new the operator is used for memory allocation and delete the operator is used for memory de-allocation. |
| No support for object-oriented programming. So there is no support for polymorphism, encapsulation, and inheritance. | Supports polymorphism, encapsulation, and inheritance which are part of object-oriented programming. |
main() the function can be called from other Functions. | We can not call main() function from other functions. |
| All variables must be defined at the starting of a scope. | You can declare variables anywhere. |
| Inheritance is not possible. | Inheritance is allowed. |
| Exception handling is not supported. | Exception handling is supported. |