Difference between C and C++What is C?C is a structural or procedural oriented programming language which is machine-independent and extensively used in various applications. C is the basic programming language that can be used to develop from the operating systems (like Windows) to complex programs like Oracle database, Git, Python interpreter, and many more. C programming language can be called a god's programming language as it forms the base for other programming languages. If we know the C language, then we can easily learn other programming languages. C language was developed by the great computer scientist Dennis Ritchie at the Bell Laboratories. It contains some additional features that make it unique from other programming languages. What is C++?C++ is a special-purpose programming language developed by Bjarne Stroustrup at Bell Labs circa 1980. C++ language is very similar to C language, and it is so compatible with C that it can run 99% of C programs without changing any source of code though C++ is an object-oriented programming language, so it is safer and well-structured programming language than C. Let's understand the differences between C and C++. The following are the differences between C and C++: - Definition
C is a structural programming language, and it does not support classes and objects, while C++ is an object-oriented programming language that supports the concept of classes and objects. - Type of programming language
C supports the structural programming language where the code is checked line by line, while C++ is an object-oriented programming language that supports the concept of classes and objects. - Developer of the language
Dennis Ritchie developed C language at Bell Laboratories while Bjarne Stroustrup developed the C++ language at Bell Labs circa 1980. - Subset
C++ is a superset of C programming language. C++ can run 99% of C code but C language cannot run C++ code. - Type of approach
C follows the top-down approach, while C++ follows the bottom-up approach. The top-down approach breaks the main modules into tasks; these tasks are broken into sub-tasks, and so on. The bottom-down approach develops the lower level modules first and then the next level modules. - Security
In C, the data can be easily manipulated by the outsiders as it does not support the encapsulation and information hiding while C++ is a very secure language, i.e., no outsiders can manipulate its data as it supports both encapsulation and data hiding. In C language, functions and data are the free entities, and in C++ language, all the functions and data are encapsulated in the form of objects. - Function Overloading
Function overloading is a feature that allows you to have more than one function with the same name but varies in the parameters. C does not support the function overloading, while C++ supports the function overloading. - Function Overriding
Function overriding is a feature that provides the specific implementation to the function, which is already defined in the base class. C does not support the function overriding, while C++ supports the function overriding. - Reference variables
C does not support the reference variables, while C++ supports the reference variables. - Keywords
C contains 32 keywords, and C++ supports 52 keywords. - Namespace feature
A namespace is a feature that groups the entities like classes, objects, and functions under some specific name. C does not contain the namespace feature, while C++ supports the namespace feature that avoids the name collisions. - Exception handling
C does not provide direct support to the exception handling; it needs to use functions that support exception handling. C++ provides direct support to exception handling by using a try-catch block. - Input/Output functions
In C, scanf and printf functions are used for input and output operations, respectively, while in C++, cin and cout are used for input and output operations, respectively. - Memory allocation and de-allocation
C supports calloc() and malloc() functions for the memory allocation, and free() function for the memory de-allocation. C++ supports a new operator for the memory allocation and delete operator for the memory de-allocation. - Inheritance
Inheritance is a feature that allows the child class to reuse the properties of the parent class. C language does not support the inheritance while C++ supports the inheritance. - Header file
C program uses <stdio.h> header file while C++ program uses <iostream.h> header file.
Let's summarize the above differences in a tabular form. No. | C | C++ |
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1) | C follows the procedural style programming. | C++ is multi-paradigm. It supports both procedural and object oriented. | 2) | Data is less secured in C. | In C++, you can use modifiers for class members to make it inaccessible for outside users. | 3) | C follows the top-down approach. | C++ follows the bottom-up approach. | 4) | C does not support function overloading. | C++ supports function overloading. | 5) | In C, you can't use functions in structure. | In C++, you can use functions in structure. | 6) | C does not support reference variables. | C++ supports reference variables. | 7) | In C, scanf() and printf() are mainly used for input/output. | C++ mainly uses stream cin and cout to perform input and output operations. | 8) | Operator overloading is not possible in C. | Operator overloading is possible in C++. | 9) | C programs are divided into procedures and modules | C++ programs are divided into functions and classes. | 10) | C does not provide the feature of namespace. | C++ supports the feature of namespace. | 11) | Exception handling is not easy in C. It has to perform using other functions. | C++ provides exception handling using Try and Catch block. | 12) | C does not support the inheritance. | C++ supports inheritance. |
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