C program to create a linked list and display the elements in the list

/* Write a C program to create a linked list and display the elements in the list.*/

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

void main()
{
struct node
{
int num;
struct node *ptr;
};

typedef struct node NODE;

NODE *head, *first, *temp=0;
int count = 0;
int choice = 1;
first = 0;

while(choice)
{
head =(NODE*) malloc(sizeof(NODE));
printf("Enter the data item\n");
scanf("%d", &head-> num);

if(first != 0)
{
temp->ptr = head;
temp = head;
}
else
{
first = temp = head;
}
fflush(stdin);
printf("Do you want to continue(Type 0 or 1)?\n");
scanf("%d", &choice);

}         /* End of while */

temp->ptr = 0;
temp = first; /* reset temp to the beginning*/
printf("\nstatus of the linked list is\n");

while(temp!=0)
{
printf("%d=>", temp->num);
count++;
temp = temp -> ptr;
}
printf("NULL\n");
printf("No. of nodes in the list = %d\n", count);
} /* End of main*/

/*-----------------------------------------------
Output
Enter the data item
10
Do you want to continue(Type 0 or 1)?
1
Enter the data item
34
Do you want to continue(Type 0 or 1)?
1
Enter the data item
56
Do you want to continue(Type 0 or 1)?
0

status of the linked list is
10=>34=>56=>NULL
No. of nodes in the list = 3
----------------------------------------------*/