please use C++ programming

Create a program that makes a grocery list.

You will need an array of strings.

You dont know how many items will be on your list.

Simple problem: User tells you how many items, then tells you the items. You display the items for the user.

More complex problem: User tells you how many items, then tells you the items.

You display the items for the user. At the end of the program, write the grocery list to a text file called grocery.txt.

Even more complex problem: If grocery.txt exists, read it into an array and display to the user.

User then tells you how many more items, and then tells you the items. You display all the items for the user.

At the end of the program, write the grocery list to a text file called grocery.txt.

Start with the simple program, move toward the complex one.