diff --git a/图书管理系统.c b/图书管理系统.c
index ea9b317..be0a6e1 100644
--- a/图书管理系统.c
+++ b/图书管理系统.c
@@ -208,12 +208,212 @@ Book* DealoldBook(Book* book1)
     return book1;
 }
 //C6
-
+void foundBook(Book* book1)
+{
+    Book* book = book1;
+    printf("输入要查找的书的id:");
+    int id;
+    scanf("%d", &id);
+    getchar();
+    while (book != NULL)
+    {
+        if (id == book->iNum)
+        {
+            printf("该书的信息如下:\n");
+            printf("%d\t%s\t%s\t%s\t%d\n", book->iNum, book->acName, book->acAuthor, book->acPress, book->iAmount);
+            printf("按任意键返回\n");
+            getchar();
+            return;
+        }
+        book = book->next;
+    }
+    printf("没有找到该书!\n");
+    printf("按任意键返回\n");
+    getchar();
+    return;
+}
 //C7
+void foundReader_Info(Reader* reader1)
+{
+    Reader* reader = reader1; //备份
+    printf("输入读者的id:");
+    int id;
+    scanf("%d", &id);
+    getchar();
+    while (reader)
+    {
+        if (id == reader->iNum)
+        {
+            printf("借阅的书的编号如下:\n");
+            for (int i = 0; i < reader->iMax; i++)  //根据读者可以借阅的数量作为循环终止条件
+            {
+                if (reader->aiBookId[i] != 0)       //数组里不为0，证明有一条记录，因为：数组初始化为0，并且书的编号不可能为0
+                {
+                    printf("%d\n", reader->aiBookId[i]);
+                }
+            }
+            printf("按任意键返回\n");
+            getchar();
+            return;
+        }
+        reader = reader->next;
+    }
+    printf("没有该读者!\n");
+    printf("按任意键返回\n");
+    getchar();
+    return;
+}
 
 //C8
+void foundReaderInfo(Reader* reader1)
+{
+    Reader* reader = reader1;
+    printf("输入读者的id:");
+    int id;
+    scanf("%d", &id);
+    getchar();
+    while (reader)
+    {
+        if (id == reader->iNum)
+        {
+            printf("读者id:%d\n", reader->iNum);
+            printf("读者姓名:%s\n", reader->acName);
+            printf("读者性别:%s\n", reader->acSex);
+            printf("读者职位:%s\n", reader->position);
+            printf("读者已借阅书的数量:%d\n", reader->iAmount);
+            printf("按任意键返回\n");
+            getchar();
+            return;
+        }
+        reader = reader->next;
+    }
+    printf("没有找到该读者\n");
+    printf("按任意键返回\n");
+    getchar();
+    return;
+}
 
 //C9
+Reader* LendBook(Reader* reader1, Book* book1)
+{
+    Reader* reader = reader1;
+    Book* book = book1;
+    Reader* prev = reader1;
+    Reader* tmpp = reader1;
+    printf("输入读者id:");
+    int id;
+    scanf("%d", &id);
+    getchar();
+    if (reader == NULL)
+    {
+        Reader* tmp = (Reader*)malloc(sizeof(Reader));
+        tmp->next = NULL;
+        tmp->iAmount = 0;
+        tmp->iNum = id;
+        printf("输入读者名字:");
+        scanf("%s", &tmp->acName);
+        getchar();
+        printf("输入读者性别:");
+        scanf("%s", &tmp->acSex);
+        getchar();
+        printf("输入读者职位:<student\tor\tteacher>");
+        scanf("%s", &tmp->position);
+        getchar();
+        if (strcmp(tmp->position, "student") == 0)
+        {
+            tmp->iMax = 20;
+            tmp->day = 30;
+        }
+        else {
+            tmp->iMax = 40;
+            tmp->day = 60;
+        }
+        for (int i = 0; i < tmp->iMax; i++)
+        {
+            tmp->aiBookId[i] = 0;
+        }
+        printf("输入要借的书的编号:");
+        int id_book;
+        scanf("%d", &id_book);
+        getchar();
+        while (book != NULL)
+        {
+            if (id_book == book->iNum)
+            {
+                if (book->iAmount <= 1)
+                {
+                    printf("借阅失败，该图书库存不足.\n");
+                    printf("按任意键返回\n");
+                    getchar();
+                    return NULL;
+                }
+                if ((tmp->iAmount) + 1 > tmp->iMax)
+                {
+                    printf("借阅失败,该读者借阅图书数量已达上线.\n");
+                    printf("按任意键返回\n");
+                    getchar();
+                    return NULL;
+                }
+                book->iAmount--;
+                tmp->aiBookId[tmp->iAmount] = id_book;
+                tmp->iAmount;
+                reader = tmp;
+                printf("借阅成功!\n");
+                printf("按任意键返回\n");
+                getchar();
+                return reader;
+            }
+            book = book->next;
+        }
+        printf("没有找到该书!\n");
+        printf("按任意键返回\n");
+        getchar();
+        return reader1;
+    }
+    if (reader != NULL)
+    {
+        while (reader != NULL)
+        {
+            if (id == reader->iNum)
+            {
+                printf("图使馆当前的书籍册:\n");
+                ShowLibBook(book);
+                printf("输入要借的书的编号:");
+                int id_book;
+                scanf("%d", &id_book);
+                getchar();
+                while (book != NULL)
+                {
+                    if (id_book == book->iNum)
+                    {
+                        if (book->iAmount <= 1)
+                        {
+                            printf("借阅失败，该图书库存不足.\n");
+                            printf("按任意键返回\n");
+                            getchar();
+                            return reader1;
+                        }
+                        if (tmpp->iAmount + 1 > tmpp->iMax)
+                        {
+                            printf("借阅失败,该读者借阅图书数量已达上线.\n");
+                            printf("按任意键返回\n");
+                            getchar();
+                            return reader1;
+                        }
+                        reader->iAmount++;
+                        reader->aiBookId[tmpp->iAmount] = id_book;
+                        return reader1;
+                    }
+                    book = book->next;
+                }
+                printf("没有找到该书!\n");
+                printf("按任意键返回\n");
+            }
+            reader = reader->next;
+        }
+    }
+}
+
 
 //C10
 void returnBook(Reader* reader1, Book* book1)