How to pass the reference of arrays to a function?

Question

How to pass the reference of arrays to a function

Answer 1

Use a pointer

Answer 2

Like this:
void foo(int *pArr)
{

pArr[2] = 6;
}

int main() {

int arr[] = {1, 2, 3};

foo(arr);

cout << arr[2];

return 0;
} // Output: 6