从键盘中输入链表节点信息为学号、姓名、成绩。现有两个静态链表分别包含三个节点。用C语言编程实现两个链表的合并然后输出。

以下是一个简单的实现：

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

#define MAX_LEN 20

typedef struct Student {
    char id[MAX_LEN];
    char name[MAX_LEN];
    int score;
    struct Student* next;
} Student;

Student* create_list(int n) {
    Student* head = NULL;
    Student* tail = NULL;

    for (int i = 0; i < n; i++) {
        Student* node = (Student*)malloc(sizeof(Student));
        printf("请输入第%d个学生的信息（学号 姓名 成绩）：", i+1);
        scanf("%s %s %d", node->id, node->name, &node->score);

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

void print_list(Student* head) {
    printf("学号\t\t姓名\t成绩\n");
    while (head != NULL) {
        printf("%s\t%s\t%d\n", head->id, head->name, head->score);
        head = head->next;
    }
}

Student* merge_lists(Student* list1, Student* list2) {
    Student* head = NULL;
    Student* tail = NULL;

    while (list1 != NULL && list2 != NULL) {
        Student* node = (Student*)malloc(sizeof(Student));
        if (strcmp(list1->id, list2->id) < 0) {
            memcpy(node, list1, sizeof(Student));
            list1 = list1->next;
        } else {
            memcpy(node, list2, sizeof(Student));
            list2 = list2->next;
        }
        node->next = NULL;
        if (head == NULL) {
            head = node;
        } else {
            tail->next = node;
        }
        tail = node;
    }
    if (list1 != NULL) {
        tail->next = list1;
    }
    if (list2 != NULL) {
        tail->next = list2;
    }
    return head;
}

int main() {
    printf("请输入第一个链表的节点数：");
    int n1;
    scanf("%d", &n1);
    Student* list1 = create_list(n1);

    printf("请输入第二个链表的节点数：");
    int n2;
    scanf("%d", &n2);
    Student* list2 = create_list(n2);

    Student* merged_list = merge_lists(list1, list2);
    printf("合并后的链表为：\n");
    print_list(merged_list);

    return 0;
}

这个程序中，我们首先定义了一个 `Student` 结构体来表示学生信息，其中包含了学号、姓名、成绩和一个指向下一个节点的指针。然后通过 `create_list` 函数分别创建了两个链表，并通过 `merge_lists` 函数将两个链表合并为一个新链表。最后通过 `print_list` 函数输出合并后的链表。