Question

How do you compare and sort chararrays in a linked list, cant you compare like this ‘Smith’ > ‘Andersson’ ?

struct person {
char name[20];
struct person *nextPerson;
};

.
void createNode(PersonPtr *sPtr, struct person t[]){
  PersonPtr newPtr; /* pointer to new node */
  PersonPtr previousPtr; /* pointer to previus node in  list */
  PersonPtr currentPtr; /* pointer to current node in list */
.
/* loop to find correct location in the list */
while (currentPtr != NULL && t->name > currentPtr->name) { /* this will not sort on name */
  previousPtr = currentPtr; /* walk to... */
  currentPtr = currentPtr->nextPerson; /* ...next node */
}/* end while */

Answer 1

Close, but not quite, you can’t just use “>” or “<” on strings. What you want is strcmp.

What you want is:

while (currentPtr != NULL && strcmp(t->name,currentPtr->name) > 0)