diff --git a/图书管理系统.c b/图书管理系统.c
index 50565ce..de8b0f3 100644
--- a/图书管理系统.c
+++ b/图书管理系统.c
@@ -123,4 +123,152 @@ int main()
 		getchar();
 	}
 	return 0;
+}
+
+
+void ShowLibInfo(const Book* book1, const Reader* reader1)
+{
+	Book* book = book1;
+	Reader* reader = reader1;
+ 
+ 
+	int bookNUm = 0, readerNUm = 0, mangerNUm = 0;
+	while (book != NULL)
+	{
+		bookNUm++;
+		book = book->next;
+	}
+	while (reader != NULL)
+	{
+		readerNUm++;
+		reader = reader->next;
+	}
+ 
+	printf("本图书馆共有藏书%d本,读者%d人\n", bookNUm, readerNUm);
+	printf("按任意键返回\n");
+	getchar();
+	return;
+}
+ 
+void ShowLibBook(Book* book1)
+{
+	Book* book = book1;
+	while (book != NULL)
+	{                     // \t :制表符
+		printf("%d\t%s\t%s\t%s\t%d\n", book->iNum, book->acName, book->acAuthor, book->acPress, book->iAmount);
+		book = book->next;
+	}
+	printf("\n按任意键返回\n");
+	getchar();
+	return;
+}
+Book* AddBook(Book* book1)
+{
+	Book* book = book1;
+ 
+	if (book == NULL)
+	{
+ 
+		Book* tmp = (Book*)malloc(sizeof(Book));
+		tmp->next = NULL;
+		assert(tmp);
+		printf("输入书的编号:");
+		scanf("%d", &tmp->iNum);
+		getchar();
+		printf("输入书的名称:");
+		gets(&tmp->acName);
+		printf("输入书的作者:");
+		gets(tmp->acAuthor);
+		printf("输入书的出版社:");
+		gets(tmp->acPress);
+		printf("输入书的库存量:");
+		scanf("%d", &tmp->iAmount);
+		book = tmp;
+ 
+		printf("按任意键返回\n");
+		getchar();
+		return book;
+ 
+		return;
+	}
+ 
+	while (1)
+	{
+		while (book->next == NULL)
+		{
+			int flag = 1;
+			while (flag)
+			{
+				Book* tmp = (Book*)malloc(sizeof(Book));
+ 
+				tmp->next = NULL;
+				assert(tmp);
+				printf("输入书的编号:");
+				scanf("%d", &tmp->iNum);
+				getchar();
+				printf("输入书的名称:");
+				gets(&tmp->acName);
+				printf("输入书的作者:");
+				gets(tmp->acAuthor);
+				printf("输入书的出版社:");
+				gets(tmp->acPress);
+				printf("输入书的库存量:");
+				scanf("%d", &tmp->iAmount);
+ 
+				book->next = tmp;
+ 
+				printf("是否继续输入:1==>继续\t0==>结束\t");
+				scanf("%d", &flag);
+				getchar();
+				if (flag == 0)
+				{
+					printf("按任意键返回\n");
+					getchar();
+					return book1;
+				}
+			}
+		}
+		book = book->next;
+	}
+	printf("按任意键返回\n");
+	getchar();
+	return;
+}
+ 
+ 
+ 
+ 
+Book* DealoldBook(Book* book1)
+{
+	Book* book = book1;
+	Book* prev = book1;
+	printf("输入要处理旧书的编号:");
+	int id;
+	scanf("%d", &id);
+	getchar();
+	while (book != NULL)
+	{
+ 
+		if (id == book->iNum)
+		{
+			if (book1 == book)
+			{
+				book = book->next;
+				free(prev);
+				return book;
+			}
+			prev->next = book->next;
+			free(book);                     // free():释放资源
+			printf("已将旧书处理掉!\n");
+			printf("按任意键返回\n");
+			getchar();
+			return book1;
+		}
+		prev = book;
+		book = book->next;
+	}
+	printf("没有找到该图书\n");
+	printf("按任意键返回\n");
+	getchar();
+	return book1;
 }
\ No newline at end of file