C语言用链表存储读取文件信息并打印

下面是一个使用链表存储文件信息并打印的示例代码：

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

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

struct list {
    struct node* head;
    struct node* tail;
};

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

int main() {
    FILE* fp;
    fp = fopen("data.txt", "r");
    if (fp == NULL) {
        printf("Failed to open file.\n");
        return 0;
    }

    struct list mylist;
    mylist.head = NULL;
    mylist.tail = NULL;

    int data;
    while (fscanf(fp, "%d", &data) != EOF) {
        struct node* new_node = (struct node*)malloc(sizeof(struct node));
        new_node->data = data;
        new_node->next = NULL;
        if (mylist.head == NULL) {
            mylist.head = new_node;
            mylist.tail = new_node;
        } else {
            mylist.tail->next = new_node;
            mylist.tail = new_node;
        }
    }

    fclose(fp);

    print_list(mylist);

    return 0;
}

这个程序打开名为"data.txt"的文件，读取其中的整数并将它们存储在链表中。然后，它调用"print_list"函数遍历链表并打印所有元素。