### Understanding Constructors in C++Let B be a class with a constructor that can receive an `int` as its parameter. B doesn't have a user-provided default constructor.Here's the definition of class B:```cppclass B {public: B(int n) { cout << n << endl; };};```### QuestionHow many times is a constructor called with the following definition of an array? (Hint: Try it in an IDE)```cppB arr[4] {{0}, {1}, B{2}, 3};```### Options:1. ⭕ 32. ⭕ 23. ⭕ 44. ⭕ 15. ⭕ None of these.### Explanation:In the array definition `B arr[4] {{0}, {1}, B{2}, 3};`:- The statement initializes an array of `B` objects with 4 elements.- `{0}`, `{1}`, `B{2}`, and `3` each call the constructor of `B`.Thus, the constructor is called 4 times for each of these initializations. To verify this, you can try compiling this code snippet in an IDE and observe the output.### Answer:⭕ 4

What is constructor? A constructor is a special type of member function of a class which initializes…

Answered: }; How many times a constructor is…

}; How many times a constructor is called with the following definition of an array? (Hint: Try it in an IDE) B arr[4] {{0}, {1}, B{2}, 3};

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

### Understanding Constructors in C++

Let B be a class with a constructor that can receive an `int` as its parameter. B doesn't have a user-provided default constructor.

Here's the definition of class B:

```cpp
class B {
public:
B(int n) { cout << n << endl; };
};
```

### Question
How many times is a constructor called with the following definition of an array? (Hint: Try it in an IDE)

```cpp
B arr[4] {{0}, {1}, B{2}, 3};
```

### Options:
1. ⭕ 3
2. ⭕ 2
3. ⭕ 4
4. ⭕ 1
5. ⭕ None of these.

### Explanation:

In the array definition `B arr[4] {{0}, {1}, B{2}, 3};`:
- The statement initializes an array of `B` objects with 4 elements.
- `{0}`, `{1}`, `B{2}`, and `3` each call the constructor of `B`.

Thus, the constructor is called 4 times for each of these initializations.

To verify this, you can try compiling this code snippet in an IDE and observe the output.

### Answer:
⭕ 4

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