任务是使用C++中的文件处理来构建书店管理系统，该系统有助于跟踪文件中的所有书籍记录。以下是要实现的功能：
- 添加新书，该书的详细信息是：
- 书号
- 书名
- 作者姓名
- 书数
- 删除书籍
- 更新一本书
- 查看所有书籍
- 出口
方法：
- 所有功能将在开关盒下提供。
- 文件处理的概念将用于将数据写入文本文件并读取已写入的数据。
- 所需的函数将在开关盒下编写，并根据用户的输入执行。
- 使用简单的文件处理概念(例如打开文件，关闭文件，写入文件和读取文件等)来开发代码。
- 用于编译C++语言代码的IDE。
下面是上述方法的实现：
C++
// C++ program to illustrate bookshop
// management system using File Handling
#include
#include
#include
#include
using namespace std;
// Bookshop Class
class bookshope {
public:
void control_panel();
void add_book();
void show_book();
void check_book();
void update_book();
void del_book();
};
// Function to display the menus
void bookshope::control_panel()
{
system("cls");
cout << "\n\n\t\t\t\tCONTROL PANEL";
cout << "\n\n1. ADD BOOK";
cout << "\n2. DISPLAY BOOKS";
cout << "\n3. CHECK PARTICULAR BOOK";
cout << "\n4. UPDATE BOOK";
cout << "\n5. DELETE BOOK";
cout << "\n6. EXIT";
}
// Function to add book
void bookshope::add_book()
{
system("cls");
fstream file;
int no_copy;
string b_name, a_name, b_id;
cout << "\n\n\t\t\t\tADD BOOKS";
cout << "\n\nBook ID : ";
cin >> b_id;
cout << "\nBook Name : ";
cin >> b_name;
cout << "\nAuthor Name : ";
cin >> a_name;
cout << "\nNo. of Books : ";
cin >> no_copy;
// Open file in append or
// output mode
file.open("D:// book.txt",
ios::out | ios::app);
file << " " << b_id << " "
<< b_name << " " << a_name
<< " " << no_copy << "\n";
file.close();
}
// Function to display book
void bookshope::show_book()
{
system("cls");
fstream file;
int no_copy;
string b_name, b_id, a_name;
cout << "\n\n\t\t\t\t\tAll BOOKS";
// Open the file in input mode
file.open("D:// book.txt", ios::in);
if (!file)
cout << "\n\nFile Opening Error!";
else {
cout << "\n\n\nBook ID\t\tBook"
<< "\t\tAuthor\t\tNo. of "
"Books\n\n";
file >> b_id >> b_name;
file >> a_name >> no_copy;
// Till end of file is reached
while (!file.eof()) {
cout << " " << b_id
<< "\t\t" << b_name
<< "\t\t" << a_name
<< "\t\t" << no_copy
<< "\n\n";
file >> b_id >> b_name;
file >> a_name >> no_copy;
}
system("pause");
// Close the file
file.close();
}
}
// Function to check the book
void bookshope::check_book()
{
system("cls");
fstream file;
int no_copy, count = 0;
string b_id, b_name, a_name, b_idd;
cout << "\n\n\t\t\t\tCheck "
<< "Particular Book";
// Open the file in input mode
file.open("D:// book.txt", ios::in);
if (!file)
cout << "\n\nFile Opening Error!";
else {
cout << "\n\nBook ID : ";
cin >> b_idd;
file >> b_id >> b_name;
file >> a_name >> no_copy;
while (!file.eof()) {
if (b_idd == b_id) {
system("cls");
cout << "\n\n\t\t\t\t"
<< "Check Particular Book";
cout << "\n\nBook ID : "
<< b_id;
cout << "\nName : "
<< b_name;
cout << "\nAuthor : "
<< a_name;
cout << "\nNo. of Books : "
<< no_copy;
cout << endl
<< endl;
count++;
break;
}
file >> b_id >> b_name;
file >> a_name >> no_copy;
}
system("pause");
file.close();
if (count == 0)
cout << "\n\nBook ID Not"
<< " Found...";
}
}
// Function to update the book
void bookshope::update_book()
{
system("cls");
fstream file, file1;
int no_copy, no_co, count = 0;
string b_name, b_na, a_name;
string a_na, b_idd, b_id;
cout << "\n\n\t\t\t\tUpdate Book Record";
file1.open("D:// book1.txt",
ios::app | ios::out);
file.open("D:// book.txt", ios::in);
if (!file)
cout << "\n\nFile Opening Error!";
else {
cout << "\n\nBook ID : ";
cin >> b_id;
file >> b_idd >> b_name;
file >> a_name >> no_copy;
// Till end of file is reached
while (!file.eof()) {
if (b_id == b_idd) {
system("cls");
cout << "\t\t\t\t"
<< "Update Book Record";
cout << "\n\nNew Book Name : ";
cin >> b_na;
cout << "\nAuthor Name : ";
cin >> a_na;
cout << "\nNo. of Books : ";
cin >> no_co;
file1 << " " << b_id << " "
<< b_na << " "
<< a_na << " " << no_co
<< "\n\n";
count++;
}
else
file1 << " " << b_idd
<< " " << b_name
<< " " << a_name
<< " " << no_copy
<< "\n\n";
file >> b_idd >> b_name;
file >> a_name >> no_copy;
}
if (count == 0)
cout << "\n\nBook ID"
<< " Not Found...";
}
cout << endl;
system("pause");
// Close the files
file.close();
file1.close();
remove("D:// book.txt");
rename("D:// book1.txt",
"D:// book.txt");
}
// Function to delete book
void bookshope::del_book()
{
system("cls");
fstream file, file1;
int no_copy, count = 0;
string b_id, b_idd, b_name, a_name;
cout << "\n\n\t\t\t\tDelete a Book";
// Append file in output mode
file1.open("D:// book1.txt",
ios::app | ios::out);
file.open("D:// book.txt",
ios::in);
if (!file)
cout << "\n\nFile Opening Error...";
else {
cout << "\n\nBook ID : ";
cin >> b_id;
file >> b_idd >> b_name;
file >> a_name >> no_copy;
while (!file.eof()) {
if (b_id == b_idd) {
system("cls");
cout << "\n\n\t\t\t\t"
<< "Delete a Book";
cout << "\n\nBook is Deleted "
"Successfully...\n\n";
count++;
}
else
file1 << " " << b_idd
<< " " << b_name
<< " " << a_name
<< " " << no_copy
<< "\n\n";
file >> b_idd >> b_name;
file >> a_name >> no_copy;
}
if (count == 0)
cout << "\n\nBook ID "
<< "Not Found...";
}
system("pause");
// Close the file
file.close();
file1.close();
remove("D:// book.txt");
rename("D:// book1.txt",
"D:// book.txt");
}
// Function for book shop record
void bookShopRecord()
{
int choice;
char x;
bookshope b;
while (1) {
b.control_panel();
cout << "\n\nEnter your choice : ";
cin >> choice;
switch (choice) {
case 1:
do {
b.add_book();
cout << "\n\nWant to add"
<< " another book? "
"(y/n) : ";
cin >> x;
} while (x == 'y');
break;
case 2:
b.show_book();
break;
case 3:
b.check_book();
break;
case 4:
b.update_book();
break;
case 5:
b.del_book();
break;
case 6:
exit(0);
break;
default:
cout << "\n\nINVALID CHOICE\n";
}
}
}
// Driver Code
int main()
{
// Function Call
bookShopRecord();
return 0;
} 输出：
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