用C加加写一个火车售票系统

火车售票系统是一个比较复杂的系统，需要考虑到票务管理、座位管理、订单管理等多个方面。在这里，我来给你提供一个简单的火车售票系统的代码框架，供你参考。
#include <iostream>
#include <cstring>
using namespace std;

const int MAX_SEATS = 100; // 最大座位数

struct Train {
int id; // 火车编号
int seats[MAX_SEATS]; // 每个座位的状态，0表示空，1表示占用
int price; // 票价
int num_sold; // 已售票数
};

Train trains[10]; // 10辆火车

void init() {
// 初始化10辆火车
for (int i = 0; i < 10; i++) {
trains[i].id = i + 1;
memset(trains[i].seats, 0, sizeof(trains[i].seats));
trains[i].price = 50;
trains[i].num_sold = 0;
}
}

void display_menu() {
cout << "================================" << endl;
cout << "1. 查询余票" << endl;
cout << "2. 购买车票" << endl;
cout << "3. 退票" << endl;
cout << "4. 查询订单" << endl;
cout << "5. 退出系统" << endl;
cout << "================================" << endl;
}

void query_tickets() {
int id;
cout << "请输入要查询的火车编号：";
cin >> id;
if (id < 1 || id > 10) {
cout << "输入的火车编号不合法！" << endl;
return;
}
Train&amp; train = trains[id - 1];
int num_available = MAX_SEATS - train.num_sold;
cout << "火车编号：" << train.id << endl;
cout << "票价：" << train.price << endl;
cout << "余票数量：" << num_available << endl;
}

void buy_ticket() {
int id, num;
cout << "请输入要购买的火车编号：";
cin >> id;
if (id < 1 || id > 10) {
cout << "输入的火车编号不合法！" << endl;
return;
}
Train&amp; train = trains[id - 1];
int num_available = MAX_SEATS - train.num_sold;
if (num_available == 0) {
cout << "该火车已售罄！" << endl;
return;
}
cout << "请输入要购买的票数：";
cin >> num;
if (num < 1 || num > num_available) {
cout << "输入的票数不合法！" << endl;
return;
}
int seat_num = 0;
for (int i = 0; i < MAX_SEATS; i++) {
if (train.seats[i] == 0) {
train.seats[i] = 1;
seat_num = i + 1;
num--;
if (num == 0) {
break;
}
}
}
train.num_sold += seat_num;
cout << "购票成功！座位号为：" << seat_num << "，总价为：" << train.price * num << endl;
}

void refund_ticket() {
int id, num;
cout << "请输入要退票的火车编号：";
cin >> id;
if (id < 1 || id > 10) {
cout << "输入的火车编号不合法！" << endl;
return;
}
Train&amp; train = trains[id - 1];
cout << "请输入要退票的座位号：";
cin >> num;
if (num < 1 || num > MAX_SEATS || train.seats[num - 1] == 0) {
cout << "输入的座位号不合法！" << endl;
return;
}
train.seats[num - 1] = 0;
train.num_sold--;
cout << "退票成功！" << endl;
}

void query_order() {
// TODO: 实现查询订单功能
}

int main() {
init();
while (true) {
display_menu();
int choice;
cout << "请选择操作：";
cin >> choice;
switch (choice) {
case 1:
query_tickets();
break;
case 2:
buy_ticket();
break;
case 3:
refund_ticket();
break;
case 4:
query_order();
break;
case 5:
cout << "欢迎下次光临！" << endl;
return 0;
default:
cout << "输入的选项不合法！" << endl;
}
}
return 0;
}
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这段代码实现了基本的火车售票系统功能，包括查询余票、购买车票、退票和查询订单。但是这个系统还有很多需要完善的地方，比如增加管理员登录、实现对座位的管理等。