### What is the output of the following code snippet?```cppint arr[5] = { 1, 2, 3, 4, 5 };int* ptr = arr;ptr = ptr + 2;cout << *ptr << endl;```- ( ) There is no output due to a compilation error.- ( ) 1- ( ) 2- (x) 3### Explanation:This code snippet is performing pointer arithmetic and array indexing in C++. Here is a step-by-step explanation:1. **Array Declaration:** An integer array `arr` of size 5 is initialized with the values `{ 1, 2, 3, 4, 5 }`.2. **Pointer Initialization:** A pointer `ptr` is declared and initialized to point to the first element of the array `arr`.3. **Pointer Arithmetic:** The pointer is then incremented by 2, so `ptr` now points to the third element of the array.4. **Dereferencing Pointer:** The value at the pointer (third element of the array) is printed using `cout`, which outputs `3`.

The provided code snippet involves an array of integers and a pointer in C++. It initializes an…

Answered: What is the output of the following…

What is the output of the following code snippet? int arr[5] = { 1, 2, 3, 4, 5 }; int* ptr = arr; ptr ptr + 2; cout << *ptr << endl; There is no output due to a compilation error. 1 2 3

Database System Concepts

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Concept explainers

Concept of Pointer Parameter

Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.

Question

### What is the output of the following code snippet?

```cpp
int arr[5] = { 1, 2, 3, 4, 5 };
int* ptr = arr;
ptr = ptr + 2;
cout << *ptr << endl;
```

- ( ) There is no output due to a compilation error.
- ( ) 1
- ( ) 2
- (x) 3

### Explanation:

This code snippet is performing pointer arithmetic and array indexing in C++. Here is a step-by-step explanation:

1. **Array Declaration:** An integer array `arr` of size 5 is initialized with the values `{ 1, 2, 3, 4, 5 }`.

2. **Pointer Initialization:** A pointer `ptr` is declared and initialized to point to the first element of the array `arr`.

3. **Pointer Arithmetic:** The pointer is then incremented by 2, so `ptr` now points to the third element of the array.

4. **Dereferencing Pointer:** The value at the pointer (third element of the array) is printed using `cout`, which outputs `3`.

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