Linked List Example C

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

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

struct LinkedList {
    struct Node* head;
};

struct Node* createNode(int data) {
    struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
    if (newNode == NULL) {
        printf("Memory allocation error\n");
        exit(EXIT_FAILURE);
    }
    newNode->data = data;
    newNode->next = NULL;
    return newNode;
}

void append(struct LinkedList* list, int data) {
    struct Node* new_node = createNode(data);
    if (list->head == NULL) {
        list->head = new_node;
    } else {
        struct Node* current = list->head;
        while (current->next != NULL) {
            current = current->next;
        }
        current->next = new_node;
    }
}

void print(struct LinkedList* list) {
    struct Node* current = list->head;
    while (current != NULL) {
        printf("%d\n", current->data);
        current = current->next;
    }
}

void freeList(struct LinkedList* list) {
    struct Node* current = list->head;
    while (current != NULL) {
        struct Node* temp = current;
        current = current->next;
        free(temp);
    }
    list->head = NULL;
}

int main() {
    struct LinkedList list = {NULL};
    append(&list, 1);
    append(&list, 2);
    append(&list, 3);

    struct Node* current = list.head;
    while (current != NULL) {
        printf("%d\n", current->data);
        current = current->next;
    }

    printf("%d\n", current->data); 

    freeList(&list);
    return 0;
}