Task: make the program run on your computer. Understand the logic of functions.

Learning Goal: I’m working on a algorithms & data structures question and need an explanation and answer to help me learn.Task: make the program run on your computer. Understand the logic of functions.
Make changes in the program to sort data in descending order by mergesort and quicksort.
Declare a list object D of size 50 and try your program on this object.
Requirements: as long as you want   |   .doc file | C++