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++
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | #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 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.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | #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
See its very simple. If you have any questions or doubts then comment below.