C++: 4. Array of Objects

You can store objects of user defined datatype in a C++ Array.

To store objects of user defined datatype in an array, you can declare an array of the specific type and initialize the array

Advantages of Array of Objects:

1. The array of objects represent storing multiple objects in a single name.
2. In an array of objects, the data can be accessed randomly by using the index number.
3. Reduce the time and memory by storing the data in a single variable.

Example:- 

// C++ program to implement

// the above approach

#include<iostream>

using namespace std;

 

class Employee

{

  int id;

  char name[30];

  public:

   

  // Declaration of function

  void getdata();

   

  // Declaration of function

  void putdata();

};

 

// Defining the function outside

// the class

void Employee::getdata()

{

  cout << "Enter Id : ";

  cin >> id;

  cout << "Enter Name : ";

  cin >> name;

}

 

// Defining the function outside

// the class

void Employee::putdata()

{

  cout << id << " ";

  cout << name << " ";

  cout << endl;

}

 

// Driver code

int main()

{

  // This is an array of objects having

  // maximum limit of 30 Employees

  Employee emp[30];

  int n, i;

  cout << "Enter Number of Employees - ";

  cin >> n;

   

  // Accessing the function

  for(i = 0; i < n; i++)

    emp[i].getdata();

   

  cout << "Employee Data - " << endl;

   

  // Accessing the function

  for(i = 0; i < n; i++)

    emp[i].putdata();

}

Output:- 

It will store the n number of employee data and prints it