#include <stdio.h>
#include <stdlib.h>
 
// Structure definition
struct Node {
    int data;
    struct Node *next;
};
 
// Function to create a new node
struct Node* createNode(int data) {
    struct Node *newNode = (struct Node*)malloc(sizeof(struct Node));
    newNode->data = data;
    newNode->next = NULL;
    return newNode;
}
 
// Function to create a circular linked list
struct Node* createCircularList(int n) {
    struct Node *head = NULL, *temp, *newNode;
    int data, i;
 
    if (n <= 0) {
        printf("Number of nodes must be greater than 0.\n");
        return NULL;
    }
 
    for (i = 1; i <= n; i++) {
        printf("Enter data for node %d: ", i);
        scanf("%d", &data);
        newNode = createNode(data);
 
        if (head == NULL) {
            head = newNode;
            temp = head;
        } else {
            temp->next = newNode;
            temp = newNode;
        }
    }
    temp->next = head; // make it circular
    return head;
}
 
// Function to display circular linked list
void displayCircularList(struct Node *head) {
    struct Node *temp = head;
 
    if (head == NULL) {
        printf("\nList is empty.\n");
        return;
    }
 
    printf("\nCircular Linked List: ");
    do {
        printf("%d -> ", temp->data);
        temp = temp->next;
    } while (temp != head);
    printf("(back to head)\n");
}
 
int main() {
    struct Node *head = NULL;
    int n;
 
    printf("Enter number of nodes: ");
    scanf("%d", &n);
 
    head = createCircularList(n);
 
    displayCircularList(head);
 
    return 0;
}