What is a pointer variable? Next, what? It is a dynamic array. What's the thing with pointers and dynamic arrays?

C++, use examples of code in the answer

The distinction between void and NULL pointers is as follows: Make use of appropriate examples to support your response.

There is a close association between pointers and arrays. Recall that an array variable is actually a pointer variable that points to the first indexed variable of the array. Array elements can be accessed using pointer notation as well as array notion. One problem with static arrays is that we must specify the size of the array when we write the program. This may cause two different problems: (1) we may create an array much larger than needed; or (2) we may create one that is smaller than what is needed. In general, this problem is created because we do not know the size of the array until the program is run. This is where dynamic arrays can be used. The new expression can be used to allocate an array on the freestore. Since array variables are pointer variables, you can use the new operator to create dynamic variables that are arrays and treat these dynamic array variables as if they were ordinary arrays. Array elements can also be accessed using pointer notation as well as array…