15 Most Important Differences Between C And C++

 Basic Introduction:

• C++ is derived from C Language. It is a Superset of C. 
• Earlier C++ was known as C with classes. 
• In C++, the major change was the addition of classes and a mechanism for inheriting class objects into other classes. 
• Most C Programs can be compiled in C++ compiler. 
• C++ expressions are the same as C expressions. 
• All C operators are valid in C++. 

Following are the differences Between C and C++ :

C	C++
1. C is Procedural Language.	1. C++ is non Procedural i.e Object oriented Language.
2. No virtual Functions are present in C	2. The concept of virtual Functions are used in C++.
3. In C, Polymorphism is not possible.	3. The concept of polymorphism is used in C++. Polymorphism is the most Important Feature of OOPS.
4. Operator overloading is not possible in C.	4. Operator overloading is one of the greatest Feature of C++.
5. Top down approach is used in Program Design.	5. Bottom up approach adopted in Program Design.
6. No namespace Feature is present in C Language.	6. Namespace Feature is present in C++ for avoiding Name collision.
7. Multiple Declaration of global variables are allowed.	7. Multiple Declaration of global varioables are not allowed.
8. In C scanf() Function used for Input. printf() Function used for output.	8. In C++ Cin>> Function used for Input. Cout<< Function used for output.
9. Mapping between Data and Function is difficult and complicated.	9. Mapping between Data and Function can be used using "Objects"
10. In C, we can call main() Function through other Functions	10. In C++, we cannot call main() Function through other functions.
11. C requires all the variables to be defined at the starting of a scope.	11. C++ allows the declaration of variable anywhere in the scope i.e at time of its First use.
12. No inheritance is possible in C.	12. Inheritance is possible in C++
13. In C, malloc() and calloc() Functions are used for Memory Allocation and free() function for memory Deallocating.	13.In C++,  new and delete operators are used for Memory Allocating and Deallocating.
14. It supports built-in and primitive data types.	14. It support both built-in and user define data types.
15. In C, Exception Handling is not present.	15. In C++, Exception Handling is done with Try and Catch block.

Difference Between OOP and POP

Difference Between OOP and POP

PROCEDURE ORIENTED  PROGRAMMING(POP)	OBJECT ORIENTED PROGRAMMING(OOP)
Top down approach in program design.	Bottom up approach in program design.
No access specifiers are used. Example: In structure all the members are public.	Public,Private,protected Access specifiers are used. Example:In class Data is Private and Functions are public.
Larger programs are divided into Functions.	Larger programs are divided into entites known as objects.
Most of the Functions share global data means data move openly around the system from one Function to another Function.	Data is private and Functions inside class can only access the private data.
Example of POP is C, FORTRAN.	Example of OOP is C++.
In POP operator can not be overloaded.	In OOP operator can be overloaded by using the concept of operator overloading.
Emphasis on doing algorithm means importance is given to the sequence of things to be done i.e algorithm.	Importance is given to the data.
Objects are very difficult to add in POP.	Objects ( i.e data and Functions ) are very easy to add at any time whenever necessary.
Procedural in nature.	Non-Procedural in nature.