c2c3c4c5 #5

Merged
mac76tib2 merged 1 commits from c1c2c3c4 into master 2 years ago

@ -77,8 +77,30 @@ void ShowMainMenu()
函数原形void ShowLibInfo(const Book* book, const Reader* reader);
功能:接受两个形参,分别是图书的链表地址,读者的链表地址,并遍历两个链表,显示出图书的数量和读者的数量
```
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;
}
```
@ -87,7 +109,18 @@ void ShowMainMenu()
1) 函数原形: void ShowLibBook(Book* book);
2) 功能: 接受一个形参:图书的链表地址,遍历该链表,显示出所有图书的信息
```
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;
}
```
@ -97,7 +130,78 @@ void ShowMainMenu()
1) 函数原形: Book* AddBook(Book* book);
2) 功能: 接受一个形参:图书的链表地址,利用尾插对链表进行修改,添加图书
```
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;
}
```
@ -107,7 +211,40 @@ void ShowMainMenu()
1函数原形: Book* DealoldBook(Book* book);
2) 功能: 接受一个形参:图书链表的地址,遍历该链表,用书的编号进行匹配,找到该图书后删除该图书,否则返回
```
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;
}
```

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