- Both the languages have a similar syntax.
- Code structure of both the languages are same.
- The compilation of both the languages is similar.
- They share the same basic syntax. Nearly all of C’s operators and keywords are also present in C++ and do the same thing.
- C++ has a slightly extended grammar than C, but the basic grammar is the same.
- Basic memory model of both is very close to the hardware.
- Same notions of stack, heap, file-scope and static variables are present in both the languages.
Below is the table of differences between C and C++:
|C was developed by Dennis Ritchie between the year 1969 and 1973 at AT&T Bell Labs.||C++ was developed by Bjarne Stroustrup in 1979.|
|C does no support polymorphism, encapsulation, and inheritance which means that C does not support object oriented programming.||C++ supports polymorphism, encapsulation, and inheritance because it is an object oriented programming language.|
|C is a subset of C++.||C++ is a superset of C.|
|C contains 32 keywords.||C++ contains 52 keywords.|
|For the development of code, C supports procedural programming.||C++ is known as hybrid language because C++ supports both procedural and object oriented programming paradigms.|
|Data and functions are separated in C because it is a procedural programming language.||Data and functions are encapsulated together in form of an object in C++.|
|C does not support information hiding.||Data is hidden by the Encapsulation to ensure that data structures and operators are used as intended.|
|Built-in data types is supported in C.||Built-in & user-defined data types is supported in C++.|
|C is a function driven language because C is a procedural programming language.||C++ is an object driven language because it is an object oriented programming.|
|Function and operator overloading is not supported in C.||Function and operator overloading is supported by C++.|
|C is a function-driven language.||C++ is an object-driven language|
|Functions in C are not defined inside structures.||Functions can be used inside a structure in C++.|
|Namespace features are not present inside the C.||Namespace is used by C++, which avoid name collisions.|
|Header file used by C is stdio.h.||Header file used by C++ is iostream.h.|
|Reference variables are not supported by C.||Reference variables are supported by C++.|
|Virtual and friend functions are not supported by C.||Virtual and friend functions are supported by C++.|
|C does not support inheritance.||C++ supports inheritance.|
|Instead of focusing on data, C focuses on method or process.||C++ focuses on data instead of focusing on method or procedure.|
|C provides malloc() and calloc() functions for dynamic memory allocation, and free() for memory de-allocation.||C++ provides new operator for memory allocation and delete operator for memory de-allocation.|
|Direct support for exception handling is not supported by C.||Exception handling is supported by C++.|
|scanf() and printf() functions are used for input/output in C.||cin and cout are used for input/output in C++.|
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