INTERVIEW QUESTIONS C++ C++ BASICS DETAILS

Question: What is the difference between class and structure?

Answer: Structure: Initially (in C) a structure was used to bundle different type of data types together to<br>perform a particular functionality. But C++ extended the structure to contain functions also. The<br>major difference is that all declarations inside a structure are by default public.<br><br>Class: Class is a successor of Structure. By default all the members inside the class are private.

Structure: Initially (in C) a structure was used to bundle different type of data types together to<br>perform a particular functionality. But C++ extended the structure to contain functions also. The<br>major difference is that all declarations inside a structure are by default public.<br><br>Class: Class is a successor of Structure. By default all the members inside the class are private. Source: CoolInterview.com

one more difference apart from public and private access specifier, that struct dont have protected as an access specifier while class do. Source: CoolInterview.com

There are two differences between Structure and Class. Firstly, Structure cannot be inherited. Secondly, Structure is a value data type whereas Class is a reference type. Source: CoolInterview.com

1) structure instances cannot be used as operand to arithmetic operators like +-*/ . But object (instances of classes) can be (using operator overloading). <br>2) There is no data hiding features comes with structures. Classes do, private, protected and public Source: CoolInterview.com

A structure is a convenient tool for handling a logicaly related data items,it is a user defined data type with templet.<br>Example:<br>struct student<br>{<br> char name[20];<br> int Roll_no;<br> float marks;<br>};<br>A class is an extention of the idea of stucture used in C.It is a way of creating and implementing a user defined data type<br>Example:<br>class class_name<br>{<br>private:<br>variable declaration;<br>function decleration;<br>public:<br>variable declaration;<br>function decleration;<br>};<br>A structure do not hav the property of data hiding that is all the members of structure are accessible by any function anywere in there scope.that is the data member of structure are public by default<br>A class have the property of data hiding that is the data member of the class are accessible only by there object,the data member of class are private by default Source: CoolInterview.com

the difference between class and structure are by default all the data members are private but in structure by default it's private. Source: CoolInterview.com

class:-<br>class is extracted for the fetures of oops<br>sturcture<br>structure the collection of all members of different data types<br>class:-<br>in class we can use all the 3 access specifiers and they are<br>1.private<br>2.public<br>3.protected<br>structure:-<br>we use only private(defult)<br>structure:-<br>structure has a keyword struct<br>class:-<br>class itself is an keyword<br>sturcture:-<br>structure has more security<br>class:-<br>class has a low security when compared to structure<br>structure:<br>we use "->" for accessing<br>class:-<br>in class we use "." Source: CoolInterview.com

1.By default the members of a structure are public and for a class they are private.<br>2.A structure can't declare protected members,a class can. <br>3.A structure can't be abstract, a class can.<br>4.A structure is a value type, while a class is a reference type. Source: CoolInterview.com

Structure:<br>1. By default, the members of a structure are public i.e structure variables can be accessed by any function (data hiding is not possible)<br><br>2. In structure, we can declare only variables.<br><br>3. we can't inherit a structue from another structure.<br><br>class:<br>1. By default, the members are private i.e class variables can be accessed by only class member functions. (datahiding is possible)<br><br>2. In classes we can declare both data members and member functions.<br><br>3. We can inherit a class from another class. Source: CoolInterview.com

we use 'struct'key word to define a structure where as 'class'for defining a class.By default the members of a structures are public and the members of a class are private Source: CoolInterview.com

In structure,Only data members are declared,in which data move around in all the program but in class member functions as well as data members both are declared and data is bounded tightly i.e. member functions can access data..... Source: CoolInterview.com

the only difference between structures and class is that public and private by default.<br>structures can be inherited just like classes<br>structures can contain member functions just like structures do.<br>struct also supports function overloading<br> Source: CoolInterview.com

In c++ structure and class are similar, only difference is by default member of structure are public but by default member of class is private.<br><br>In c++ we can use 'struct' keyword on the place of 'class' and can perform all the operatoins as we perform on classes.<br><br>But in the case of c we can not combine functions in structure but this feature present in c++. Source: CoolInterview.com

strutures doesn't provide something like data hiding which is provided by the classes.
structures contains only data while class bind both data and member functions

Source: CoolInterview.com

In class all the members are private bydefault where as the in structure all the members are public.


Regards,
Nicku Source: CoolInterview.com

By default all the members of the class is private where as in structure all the members are public



Regards,
Nicku Source: CoolInterview.com

hello how are you? your answer is not very well. Source: CoolInterview.com

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