34 Lecture

1. What is an array of objects in programming? A. An array that stores integers B. An array that stores characters C. An array that stores multiple objects of the same class D. An array that stores multiple functions

Answer: C

2. How do you declare an array of objects in C++? A. int arr[]; B. char arr[]; C. ClassName arr[]; D. Object arr[];

Answer: C

3. How do you initialize an array of objects in C++? A. Using a loop B. Using a function C. Using a constructor D. Using an if statement

Answer: C

4. Can you access individual elements of an array of objects using array index notation? A. Yes B. No

Answer: A

5. How do you access a member function of an object in an array of objects? A. objectName.memberFunction() B. arrayName[index].memberFunction() C. objectName[index].memberFunction() D. arrayName.memberFunction()

Answer: B

6. How do you access a data member of an object in an array of objects? A. objectName.dataMember B. arrayName[index].dataMember C. objectName[index].dataMember D. arrayName.dataMember

Answer: B

7. What is the size of an array of objects? A. It depends on the type of objects stored in the array B. It depends on the number of elements in the array C. It depends on the memory allocated for the array D. It depends on the size of the objects stored in the array

Answer: B

8. Can you sort an array of objects in C++ using the sort() function? A. Yes B. No

Answer: A

9. How do you delete an object from an array of objects? A. Using the delete operator B. Using the remove() function C. Using the pop() function D. It is not possible to delete an object from an array of objects

Answer: D

10. What is the benefit of using an array of objects in programming? A. It allows for the manipulation of multiple objects at once B. It reduces the size of the program C. It increases the speed of the program D. It makes the code more complex

Answer: A

1. What is an array of objects and what is its purpose? Answer: An array of objects is an array that stores multiple objects of the same class. Its purpose is to provide a more organized and efficient way of working with objects, allowing for the manipulation of multiple objects at once.

2. How do you declare and initialize an array of objects in C++? Answer: An array of objects is declared and initialized using the syntax ClassName arrayName[size] = {object1, object2, object3, ...}. The size of the array must be specified, and the objects are separated by commas.

3. How do you access the elements of an array of objects in C++? Answer: The elements of an array of objects are accessed using array index notation, such as arrayName[index]. The index starts at 0 for the first element and increases by 1 for each subsequent element.

4. How do you call a member function of an object in an array of objects? Answer: A member function of an object in an array of objects is called using array index notation, such as arrayName[index].memberFunction().

5. How do you access a data member of an object in an array of objects? Answer: A data member of an object in an array of objects is accessed using array index notation, such as arrayName[index].dataMember.

6. Can you modify the values of an object in an array of objects? Answer: Yes, you can modify the values of an object in an array of objects by accessing its data members and using the assignment operator.

7. How do you loop through an array of objects in C++? Answer: An array of objects can be looped through using a for loop, such as for (int i = 0; i < size; i++) { ... }.

8. Can you sort an array of objects in C++? Answer: Yes, you can sort an array of objects in C++ using the sort() function provided by the algorithm header file.

9. How do you find the size of an array of objects in C++? Answer: The size of an array of objects in C++ can be found using the sizeof() operator or by dividing the total size of the array by the size of each element.

10. How do you delete an array of objects in C++? Answer: An array of objects is deleted using the delete[] operator, which deallocates the memory assigned to the array.

In object-oriented programming, arrays of objects are a powerful tool that can help streamline your code and make it more efficient. By creating an array of objects, you can store multiple instances of the same class in one place, making it easier to manage and manipulate them. To declare an array of objects, you first need to define your class and then create an array variable of that type. You can then initialize the array by specifying the size of the array and the values of each object. Once you have created an array of objects, you can access each object individually using array indexing. This allows you to call methods and modify data members of each object within the array. Additionally, you can use loops to iterate through the array and perform operations on each object. One common use case for arrays of objects is to create collections of related data. For example, if you are building a game that has multiple levels, you could create an array of level objects, each of which contains data such as the level's name, difficulty, and objective. This would allow you to easily manage and manipulate the levels in your game. Another use case for arrays of objects is to simplify code that involves multiple instances of the same class. For example, if you are building a program that involves multiple instances of a customer class, you could create an array of customer objects and perform operations on each object in the array instead of repeating code for each individual instance. In conclusion, arrays of objects are a powerful tool in object-oriented programming that can help you manage and manipulate multiple instances of a class more efficiently. They can simplify your code and make it easier to work with collections of related data.