1. How would I write the code for this? it is using link list If the user chooses to use existing data, ask the user for the filename of the data file. If the file does not exist, let the user choose whether to enter another filename or go to the action menu without loading any data. (NOTE: You will need to add the line: filestreamVar.clear(); to clear the filestream error before trying another file) Continue to check each file entered by the user, until one exists, or the user chooses to go to the action menu without loading any data (exiting is no longer an option). If the name of an existing file is entered, load the data from the file into a dynamically allocated linked list.