C++Can someone help me with this problem? I have been trying it but it still doesn't work. Thank you ```cpp#include // size_t for sizes and indexesusing namespace std;// WRITE YOUR FUNCTION BELOW THIS LINEint appendEvens(const int a1[], int a2[], size_t size1, size_t& size2){ int result; // Add your code here return result;}```### Testers**Running Tester.cpp**- Test results: ``` fail fail fail fail fail fail fail fail fail fail fail fail pass pass fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail ```### Testing Append Evens**Details:**- **Function Call:** `appendEvens([21, 38, 32, 49, 12, 35, 45, 52], [], sizeA, sizeB)`- **Returned Value:** `0`- **Expected Value:** `4` **Array Contents:** - **Returned:** `[]` - **Expected:** `[38, 32, 12, 52]`- **Size:** - **Returned:** `0` - **Expected:** `4` This test aims to verify the function `appendEvens`, which should append even numbers from the first array `a1[]` to the second array `a2[]`. The test expected the even numbers `[38, 32, 12, 52]` but returned an empty array, indicating that the implementation needs to be corrected. The size returned by the function also does not match the expected size of the appended array. ## Function: `appendEvens()`### DescriptionThe `appendEvens()` function takes two arrays as input and appends all of the even elements from the first array to the second array. It is assumed that the second array has enough space to accommodate the additional elements.### ParametersThe function accepts four arguments:- **array 1**: This array should not be modified. - **array 2**: This array may be modified as even elements will be appended to it.- **size 1**: This is the size of the first array and it is not modified.- **size 2**: This is the size of the second array, and it is modified as elements are appended.### Return ValueThe function returns the number of even elements appended. If the first array is empty, it returns `-1`.### Example Usage```cconst int MAX = 100;int a1[MAX] = {1, 2, 3};int a2[MAX] = {7, 9};size_t size2 = 2;int appended = appendEvens(a1, a2, 3, size2); // 1 appended// After: size2->3, a2->[7, 9, 2]```### Explanation of Example- **Input:** - `a1` is the first array with elements `{1, 2, 3}`. - `a2` is the second array with elements `{7, 9}`. - The size of the second array `size2` is `2` initially.- **Process:** - The function finds the even number `2` in `a1` and appends it to `a2`.- **Output:** - The size `size2` is updated to `3`. - The second array `a2` is now `[7, 9, 2]`.

We need to define the appendEvens() as per the given requirements.

#include // size_t for sizes and indexes using namespace std; ///////||/ WRITE YOUR FUNCTION BELOW THIS LINE //// //////// int appendEvens(const int al[], int a2[], size_t sizel, size_t& size2) { int result; // Add your code here return result; }

#include // size_t for sizes and indexes using namespace std; ///////||/ WRITE YOUR FUNCTION BELOW THIS LINE //// //////// int appendEvens(const int al[], int a2[], size_t sizel, size_t& size2) { int result; // Add your code here return result; }

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Question

C++

Can someone help me with this problem? I have been trying it but it still doesn't work.

Thank you

```cpp
#include <cstddef> // size_t for sizes and indexes
using namespace std;

// WRITE YOUR FUNCTION BELOW THIS LINE

int appendEvens(const int a1[], int a2[], size_t size1, size_t& size2)
{
int result;
// Add your code here
return result;
}
```

### Testers

**Running Tester.cpp**

- Test results:

```
fail fail fail fail fail fail fail fail fail fail fail fail pass pass fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail fail
```

### Testing Append Evens

**Details:**

- **Function Call:** `appendEvens([21, 38, 32, 49, 12, 35, 45, 52], [], sizeA, sizeB)`
- **Returned Value:** `0`
- **Expected Value:** `4`

**Array Contents:**
- **Returned:** `[]`
- **Expected:** `[38, 32, 12, 52]`

- **Size:**
- **Returned:** `0`
- **Expected:** `4`

This test aims to verify the function `appendEvens`, which should append even numbers from the first array `a1[]` to the second array `a2[]`. The test expected the even numbers `[38, 32, 12, 52]` but returned an empty array, indicating that the implementation needs to be corrected. The size returned by the function also does not match the expected size of the appended array.

## Function: `appendEvens()`

### Description
The `appendEvens()` function takes two arrays as input and appends all of the even elements from the first array to the second array. It is assumed that the second array has enough space to accommodate the additional elements.

### Parameters
The function accepts four arguments:
- **array 1**: This array should not be modified.
- **array 2**: This array may be modified as even elements will be appended to it.
- **size 1**: This is the size of the first array and it is not modified.
- **size 2**: This is the size of the second array, and it is modified as elements are appended.

### Return Value
The function returns the number of even elements appended. If the first array is empty, it returns `-1`.

### Example Usage

```c
const int MAX = 100;
int a1[MAX] = {1, 2, 3};
int a2[MAX] = {7, 9};
size_t size2 = 2;
int appended = appendEvens(a1, a2, 3, size2); // 1 appended
// After: size2->3, a2->[7, 9, 2]
```

### Explanation of Example
- **Input:**
- `a1` is the first array with elements `{1, 2, 3}`.
- `a2` is the second array with elements `{7, 9}`.
- The size of the second array `size2` is `2` initially.
- **Process:**
- The function finds the even number `2` in `a1` and appends it to `a2`.
- **Output:**
- The size `size2` is updated to `3`.
- The second array `a2` is now `[7, 9, 2]`.

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