用C语言将文件读入链表

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

// 定义链表节点结构体
typedef struct Node {
    int data;
    struct Node* next;
} Node;

// 创建链表节点
Node* createNode(int data) {
    Node* newNode = (Node*)malloc(sizeof(Node));
    newNode->data = data;
    newNode->next = NULL;
    return newNode;
}

// 将文件数据读入链表
Node* readFileToList(const char* filename) {
    FILE* file = fopen(filename, "r");
    if (file == NULL) {
        printf("无法打开文件\n");
        return NULL;
    }

    Node* head = NULL;
    Node* tail = NULL;
    int data;

    while (fscanf(file, "%d", &data) != EOF) {
        Node* newNode = createNode(data);
        if (head == NULL) {
            head = newNode;
            tail = newNode;
        } else {
            tail->next = newNode;
            tail = newNode;
        }
    }

    fclose(file);
    return head;
}

// 打印链表数据
void printList(Node* head) {
    Node* current = head;
    while (current != NULL) {
        printf("%d ", current->data);
        current = current->next;
    }
    printf("\n");
}

int main() {
    const char* filename = "data.txt";
    Node* head = readFileToList(filename);
    printList(head);
    return 0;
}