11/11, 11/13
original.c: ChatGPT output of "Write a C program to read command line arguments into a linked list".
            Same result if say "in linear time", but ChatGPT is mistaken about it being linear time.

reindented.c: With nice indentation from using M-C-q in emacs.

11/13
    freeingerror.c: Showing problem with naive loop to free linked list. Show GDB for seeing where segmentation fault occurs with "bt".

consistenthead.c: Back to reindented.c and just do variable renaming to use name "head" consistently and use "ptrtohead" where appropriate.

nodoublepointer.c: Do without a **, with InsertEnd called like other procedures.  Note failure due to subroutine not returning modified head.

fixednodublepointer.c: Add logic to main so that InsertEnd only needs to operate on a non-empty list, and simplify InsertEnd.

11/13, 11/15
inline.c: Do the insertion inline in the main procedure.

11/15
insertfront.c: Do the insertion at the front of the list so linear time (but this means list is reversed).

linearinsertrearwerror.c: Attempting next but with error causing segmentation fault and demo of how printf can be ineffective but improved with fflush.

linearinsertrear.c: Do the insertion at the rear of the list in linear time by maintaining tail pointer.

explainstrdup.c: Shows how argv array is not modified when data in linked list is modified.

nostrdup.c: Shows result of not using strdup and simplification of freeList.

eltcust.c and charptrcust.h: Do it with machinery to do other types in eltcust.h initially linked to charptrcust.h

eltcust.c and intcust.h: Now link eltcust.h to intcust.h to do with ints.