Struct_Pointer

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    struct list_item {
        char item;
        struct list_item *link;
    };

    struct list_item *header;
    struct list_item item1;
    struct list_item *temp;

    header = &item1;

    item1.item = 'A';
    item1.link = NULL;

    printf("item : %c \n", item1.item);

    (*header).item = 'B';
    printf("item : %c \n", item1.item);

    header->item = 'A';
    printf("item : %c \n", item1.item);

    temp = (struct list_item *) malloc(sizeof(struct list_item));
    temp->item = 'B';
    temp->link = header;
    header = temp;

    temp = (struct list_item *) malloc(sizeof(struct list_item));
    temp->item = 'C';
    temp->link = header;
    header = temp;

    temp = (struct list_item *) malloc(sizeof(struct list_item));
    temp->item = 'U';
    temp->link = header;
    header = temp;

    temp = (struct list_item *) malloc(sizeof(struct list_item));
    temp->item = 'D';
    temp->link = header;
    header = temp;

    temp = header;

    printf("\nheader -> ");
    while(temp != NULL)
    {
        printf("item : %c -> ", temp->item);
        temp = temp->link;
    }
    printf(" NULL \n");

    printf("item : %c \n", header->link->item);

    return 0;
}