Please help. Completely lost in this one.

In this lab, define a global array called A with size 10. The data type of the array is int. Design a recursive function called com(int n, int t) inside your .cpp file. The return type is void. The com(int n, int t) function prints out all strings with size t. Each char in the string is letter between 0 and 9. That means each letter has 10 choices. The generated string should be stored in array A. Of course, at any given time, array A can store at most one complete string. The first parameter of the function com) indicates which letter the function is working on. The second parameter of the function com) indicates the length of a desired string. The following texts are several execution examples, $ ./a.out 1 1 1 3 4 5 $ ./a.out 2 2 10