事管理系统需求分析说明书的背景

你好！我是ChitGPT，一个类ChatGPT的AI，非常乐意为您提供帮助。根据您的要求，以下是对您提出的问题的回答：

对于您提出的第一个问题，我可以提供如下的C程序代码，以实现线性表的链式存储方式。

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

typedef struct node
{
    int data;
    struct node* next;
}NODE, *PNODE;

PNODE createList(void);                     // 建立线性表
void traverseList(PNODE head);              // 输出线性表
int insertList(PNODE head, int i, int e);   // 在线性表的第i个元素之前插入一个元素
int deleteList(PNODE head, int i);          // 删除线性表中第i个元素
int searchList(PNODE head, int x);          // 在线性表中查找值为x的元素并返回查找结果
PNODE mergeList(PNODE head1, PNODE head2);  // 将两个有序链表合并为一个有序链表

int main(void)
{
    int position, element, result;
    PNODE head1, head2, head3;

    // 建立线性表
    head1 = createList();
    head2 = createList();

    // 输出线性表
    printf("List1: ");
    traverseList(head1);
    printf("List2: ");
    traverseList(head2);

    // 在线性表的第i个元素之前插入一个元素
    printf("Enter the position and element to be inserted in List1: ");
    scanf("%d %d", &position, &element);
    if (insertList(head1, position, element))
    {
        printf("Insertion is successful, List1: ");
        traverseList(head1);
    }
    else
    {
        printf("Insertion failed.\n");
    }

    // 删除线性表中第i个元素
    printf("Enter the position to be deleted in List2: ");
    scanf("%d", &position);
    if (deleteList(head2, position))
    {
        printf("Deletion is successful, List2: ");
        traverseList(head2);

    }
    else
    {
        printf("Deletion failed.\n");
    }

    // 在线性表中查找值为x的元素并返回查找结果
    printf("Enter the element to be searched in List1: ");
    scanf("%d", &element);
    result = searchList(head1, element);
    if (result == -1)
    {
        printf("The element is not found in List1.\n");
    }
    else
    {
        printf("The element is found in List1 at position %d.\n", result);
    }

    // 将两个有序链表合并为一个有序链表
    head3 = mergeList(head1, head2);
    printf("The merged list is: ");
    traverseList(head3);

    return 0;
}

PNODE createList(void)
{
    int len, i, element;
    PNODE head = (PNODE)malloc(sizeof(NODE));
    if (NULL == head)
    {
        printf("Allocation failed.\n");
        exit(-1);
    }

    head->next = NULL;
    PNODE pTail = head;

    printf("Enter the length of the list: ");
    scanf("%d", &len);

    for (i = 0; i < len; ++i)
    {
        PNODE pNew = (PNODE)malloc(sizeof(NODE));
        if (NULL == pNew)
        {
            printf("Allocation failed.\n");
            exit(-1);
        }

        printf("Enter the element for nod %d: ", i + 1);
        scanf("%d", &element);

        pNew->data = element;
        pNew->next = NULL;

        pTail->next = pNew;
        pTail = pNew;
    }

    return head;
}

void traverseList(PNODE head)
{
    PNODE p = head->next;

    while (NULL != p)
    {
        printf("%d ", p->data);
        p = p->next;
    }

    printf("\n");
}

int insertList(PNODE head, int i, int e)
{
    int j = 0;
    PNODE p = head;

    while (NULL != p && j < i - 1)
    {
        p = p->next;
        ++j;
    }

    if (NULL == p || j > i - 1)
    {
        return 0;
    }

    PNODE pNew = (PNODE)malloc(sizeof(NODE));
    if (NULL == pNew)
    {
        printf("Allocation failed.\n");
        exit(-1);
    }

    pNew->data = e;
    pNew->next = p->next;
    p->next = pNew;

    return 1;
}

int deleteList(PNODE head, int i)
{
    int j = 0;
    PNODE p = head;

    while (NULL != p->next && j < i - 1)
    {
        p = p->next;
        ++j;
    }

    if (NULL == p->next || j > i - 1)
    {
        return 0;
    }

    PNODE q = p->next;
    p->next = q->next;

    free(q);

    return 1;
}

int searchList(PNODE head, int x)
{
    int index = 1;
    PNODE p = head->next;

    while (NULL != p && p->data != x)
    {
        p = p->next;
        ++index;
    }

    if (NULL == p)
    {
        return -1;
    }

    return index;
}

PNODE mergeList(PNODE head1, PNODE head2)
{
    PNODE p = head1->next;
    PNODE q = head2->next;

    PNODE head3 = (PNODE)malloc(sizeof(NODE));
    if (NULL == head3)
    {
        printf("Allocation failed.\n");
        exit(-1);
    }

    head3->next = NULL;
    PNODE r = head3;

    while (NULL != p && NULL != q)
    {
        if (p->data <= q->data)
        {
            r->next = p;
            r = p;

            p = p->next;
        }
        else
        {
            r->next = q;
            r = q;

            q = q->next;
        }
    }

    if (NULL == p)
    {
        r->next = q;
    }
    else
    {
        r->next = p;
    }

    return head3;
}

希望这个代码为您提供了基本的参考。如果您有任何进一步的问题或疑虑，请随时向我提问。