C++ Program to Create Array of Objects

Array of objects in C++ is similar to the array of primitive data types like int, double etc.

To create object’s array, we first need to declare a class and then in main() method we create the different objects of the same class and assign them to the object array.

See the example below:

Array of Objects in C++

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#include <iostream>
using namespace std;
 
class Language{
public:
    string name;
 
    //Default constructor
    Language(){}
 
    //Parameterized constructor
    Language(string name){
        this->name = name;
    }
};
 
//To display the objects
void display(Language arr[],int length){
 
    for(int i=0; i<length; i++){
        cout << arr[i].name << endl;
    }
 
}
 
int main()
{
    //Initializing object at the time of declaration
    Language object_array[] = {Language("C"), Language("C++"), Language("Java")};
    display(object_array, 3);
 
    cout << endl << "-------------------------------" << endl;
 
    //Only Declaring Array
    Language object_array_2[3];
 
    //Initializing Array
    object_array_2[0] = Language("C");
    object_array_2[1] = Language("C++");
    object_array_2[2] = Language("Java");
 
    display(object_array_2, 3);
 
    return 0;
}

Output

Array of objects in C++

Array of Object Pointers in C++

Object pointer is a pointer that stores the address location of the class object.

Similar to normal object, these object pointer can be stored in the array under a single name.

Recommend: If you don’t know what is the new operator in C++?

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#include <iostream>
using namespace std;
 
class Language{
public:
    string name;
 
    Language(){}
 
    Language(string name){
        this->name = name;
    }
};
 
//To display the pointer objects
void display(Language *arr[],int length){
 
    for(int i=0; i<length; i++){
        cout << arr[i]->name << endl;
    }
 
}
 
int main()
{
    //Initializing pointer object array at the time of declaration
    Language *object_pointer_array[] = {new Language("C"), new Language("C++"), new Language("Java")};
    display(object_pointer_array, 3);
 
    cout << endl << "-------------------------------" << endl;
 
    //Only Declaring Array
    Language *pointer_object_array_2[3];
 
    //Initializing Array
    pointer_object_array_2[0] = new Language("C");
    pointer_object_array_2[1] = new Language("C++");
    pointer_object_array_2[2] = new Language("Java");
 
    display(pointer_object_array_2, 3);
 
    return 0;
}

Output

Array of object pointers in C++

See its very simple. If you have any questions or doubts then comment below.

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