Write a C program that reads from a file and stores lists of names (the last name first) and ages in parallel arrays and sorts using quicksort the names into alphabetical order keeping the ages with the correct names, then writes the output to a file. I am given the file InputData.txt and i must sort the names in alphabetical order with their right age using Quicksort method in C. Not using struct. MUST HAVE QUICKSORT. No one can figure this out please help.

Input is a list of names in the format(last name, first name, age). need alphabetical order of last names with their ages still by the names in file and output should be alphabetical order with their corresponding ages.