用c语言为5个学生信息建立动态链表，每个学生包括 学号、姓名和分数 3种信息（要求这些信息能 从文件中导入），输入一个学号值删除列表中 该学号的学生节点。

好的，这是一个关于动态链表的编程问题。以下是一个示例代码，可以实现你所描述的功能：

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

// 定义学生结构体
typedef struct student {
    int id;
    char name[20];
    int score;
    struct student *next;
} Student;

// 从文件中读取学生信息并创建链表
Student *createListFromFile(char *filename) {
    FILE *fp = fopen(filename, "r");
    if (fp == NULL) {
        printf("Failed to open file %s\n", filename);
        return NULL;
    }

    Student *head = NULL;
    Student *tail = NULL;

    while (!feof(fp)) {
        Student *s = (Student *)malloc(sizeof(Student));
        fscanf(fp, "%d %s %d", &(s->id), s->name, &(s->score));
        s->next = NULL;

        if (head == NULL) {
            head = s;
            tail = s;
        } else {
            tail->next = s;
            tail = s;
        }
    }

    fclose(fp);
    return head;
}

// 根据学号删除节点
Student *deleteNodeById(Student *head, int id) {
    Student *prev = NULL;
    Student *curr = head;

    while (curr != NULL) {
        if (curr->id == id) {
            if (prev == NULL) {
                head = curr->next;
            } else {
                prev->next = curr->next;
            }
            free(curr);
            printf("Student with ID %d has been deleted.\n", id);
            return head;
        }
        prev = curr;
        curr = curr->next;
    }

    printf("Student with ID %d not found.\n", id);
    return head;
}

// 打印链表中的所有学生信息
void printList(Student *head) {
    Student *curr = head;
    while (curr != NULL) {
        printf("%d %s %d\n", curr->id, curr->name, curr->score);
        curr = curr->next;
    }
}

int main() {
    // 从文件中创建链表
    Student *head = createListFromFile("students.txt");
    if (head == NULL) {
        return 1;
    }

    // 打印链表中的所有学生信息
    printf("Original list:\n");
    printList(head);

    // 删除学号为 1002 的学生节点
    head = deleteNodeById(head, 1002);

    // 打印删除后的链表
    printf("List after deletion:\n");
    printList(head);

    return 0;
}

注意：这只是一个示例代码，实际应用中可能需要根据具体需求进行修改。