This is a preliminary lesson for the learners of C. The objective is the acquaitance with the structure of a linked listEssentially the structure of any linked list contains two parts, the data part and the pointer part. The first 4 items in the structure indicate the data part, whereas the last one indicates the pointer part.
 
 
These are called nodes in Linked List
 
 
struct invoice{
char itemno[5];
char itemdesc[30];
float rate;
int qty;
struct invoice *next;
};