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

typedef struct Node {
    int data;
    struct Node* next;
} Node;

Node* createNode(int data) {
    Node* newNode = (Node*)malloc(sizeof(Node));
    newNode->data = data;
    newNode->next = NULL;
    return newNode;
}

void doPrintNumberedList(struct Node *list, int number) {
    if (list == NULL) {
        return;
    }
    printf("%d", number);
    printf(" . ");
    printf("%d\n", list->data);
    doPrintNumberedList(list->next, number + 1);
}

void printNumberedList(struct Node *list) {
    if (list == NULL) {
        return;
    }
    doPrintNumberedList(list, 1);
}

int main() {
    Node* head = createNode(12);
    head->next = createNode(22);
    head->next->next = createNode(33);
    head->next->next->next = createNode(45);
    head->next->next->next->next = createNode(56);
    printNumberedList(head);
    Node* tmp;
    while (head) {
        tmp = head;
        head = head->next;
        free(tmp);
    }

    return 0;
}