The variables arr1 and arr2 have been declared as pointers to integers. An array of 10 elements has been allocated, its pointer assigned to arr1, and the elements initialized to some values. Allocate an array of 20 elements, assign its pointer to arr2, copy the 10 elements from arr1 to the first 10 elements of arr2, and initialize the remander of the elements of arr2 to 0.

Can someone help me get started on this program. This is a question from myprogramminglab..

Don't know you still use pointers in C++, but that's OK.

To declare pointer arr1 to an integer, you would do
int *arr1;

Assuming you have assigned an array called iarray:
int iarray[20];

Assigning the pointer to the beginning of the array is
arr1=iarray; // or
arr1=iarray[0];
Hope that gets you started.

Sure! Here's how you can get started on this program:

1. Declare the variables arr1 and arr2 as pointers to integers:
```
int *arr1, *arr2;
```

2. Allocate an array of 10 elements for arr1 and assign its pointer to arr1:
```
arr1 = malloc(10 * sizeof(int));
```

3. Initialize the elements of arr1 to some values:
```
// Example initialization
arr1[0] = 10;
arr1[1] = 20;
// ... continue initializing the rest of the elements
```

4. Allocate an array of 20 elements for arr2 and assign its pointer to arr2:
```
arr2 = malloc(20 * sizeof(int));
```

5. Copy the 10 elements from arr1 to the first 10 elements of arr2:
```
memcpy(arr2, arr1, 10 * sizeof(int));
```

6. Initialize the remaining elements of arr2 to 0:
```
// Assuming only the first 10 elements were copied from arr1
for (int i = 10; i < 20; i++) {
arr2[i] = 0;
}
```

7. After you're done using arr1 and arr2, make sure to free the memory allocated for them:
```
free(arr1);
free(arr2);
```

Note: Don't forget to include the `<stdlib.h>` and `<string.h>` headers for memory allocation and memory copying functions, respectively.

To get started on this program, you can follow these steps:

1. Declare the arrays and the pointers:

```c
int *arr1, *arr2;
```

2. Allocate memory for the first array and assign the pointer:

```c
arr1 = (int*)malloc(10 * sizeof(int));
```

3. Initialize the elements of the first array with some values:

```c
// Example initialization
for (int i = 0; i < 10; i++) {
arr1[i] = i + 1;
}
```

4. Allocate memory for the second array and assign the pointer:

```c
arr2 = (int*)malloc(20 * sizeof(int));
```

5. Copy the first 10 elements from arr1 to the first 10 elements of arr2:

```c
memcpy(arr2, arr1, 10 * sizeof(int));
```

6. Initialize the remaining elements of arr2 to 0:

```c
for (int i = 10; i < 20; i++) {
arr2[i] = 0;
}
```

7. You can then print the contents of arr1 and arr2 to verify the results:

```c
printf("arr1: ");
for (int i = 0; i < 10; i++) {
printf("%d ", arr1[i]);
}
printf("\n");

printf("arr2: ");
for (int i = 0; i < 20; i++) {
printf("%d ", arr2[i]);
}
printf("\n");
```

Don't forget to free the allocated memory when you're done using it:

```c
free(arr1);
free(arr2);
```

This should help you get started with the program. Let me know if you have any questions!