Difference between struct and class in terms of Access Modifier.
- All members of a class are private by default, whereas fields of a struct are public. Default access of a base class is private for classes and public for structures.
For Example :struct Emp
{
char Name[20]; // Here Name variable is public
};
Difference between struct and class in terms of Access Modifier.
Classes and structures are syntactically similar. In C++, the role of the structure was expanded, making it an nalternative way to specify a class. In C, the structures include data members, in C++ they are expanded to have function members as well. This makes structures in C++ and classes to be virtually same. The only difference between a C++ struct and a class is that, by default all the struct members are public while by default class members are private.
Define classes and structure.
Class : - User defined data type which contains data and methods to manipulate that data; is known as class. It is the fundamental packaging unit of OO technology. An object is a variable of a Class. Each object is associated with the data of type class with which it is created. Thus we can also say that class is a collection of objects of similar types. It is a user defined data type and behaves like built-in data type of the language. Since class has data and methods to manipulate the data, it supports one of the most important features of OO: Data Encapsulation.
-
Example :class Student
{
int rollno;
int marks1, marks2;
public:
void show(int r); // to print marks
void sum(int r); // to add the marks
};
- We can create objects of class using :
class Student s1, s2;
Structure :- A structure is a collection of variables, referenced under one name, providing a convenient means of keeping related information together. Structure declaration forms a template which can be used to create structure objects. The variables inside a structure are called members. Generally all the members of a structure are logically related. Structure declaration precedes the keyword struct.
- Consider the following example :
struct address
{
char name[80];
char street[80];
char city[20];
char state[20];
};
- Please note the semicolon at the end of structure declaration. This is done because a structure declaration is a statement. The type name of this structure is address.
- We can create structure variables using :
struct address ad1, ad2;
ad1 and ad2 are two variables of the type struct address.
