Sorting a linked list and Inserting a new element in descending order in C programming

Given:

typedef struct person {

unsigned short age; char *name; // first name, no spaces struct height {int feet; int inches;} vertical; int idenifier; // unique identifier struct person *next; } person_t;

The linked list should be sorted in descending order depedning on the age.

Say, a file has the data below

31 Alice 5 9 111111 64 Bob 6 11 555555 22 Mira 6 3 7171

The first element of the list is pointed to by person_t *head which in the example would be 64 Bob 6 11 555555.

After sorting, the file output should be

64 Bob 6 11 555555

31 Alice 5 9 111111

22 Mira 6 3 7171

Given : void insert_plist(unsigned short a, char *b, int c, int d, int e);

Then we want to insert a new person in the linked list, the position of the person to be inserted depends on the descending order.

Say if we want to insert 48 Aaron 6 10 77778 into the linked list above. The element would be placed in the second since the age 48 is the second largest number in the list.