飞机票订票系统代码

好的，以下是一个简单的飞机票订票系统的C语言代码，包括订票、退票、查询航班信息和查询订票信息等功能：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// 定义航班信息结构体
typedef struct {
    char flight_no[10];  // 航班号
    char departure[20];  // 出发地
    char destination[20];  // 目的地
    char departure_time[20];  // 起飞时间
    char arrival_time[20];  // 到达时间
    float price;  // 票价
} Flight;

// 定义乘客信息结构体
typedef struct {
    char name[20];  // 姓名
    char gender[10];  // 性别
    char id[20];  // 身份证号
    char phone[20];  // 联系方式
} Passenger;

// 定义订票信息结构体
typedef struct {
    Flight flight;  // 航班信息
    Passenger passenger;  // 乘客信息
} Ticket;

// 定义订票信息文件名
const char ticket_file[] = "ticket.dat";

// 定义航班信息数组和航班数目
Flight flights[10];
int num_flights = 0;

// 函数声明
void print_menu();
void add_flight();
void print_flights();
void book_ticket();
void print_tickets();
void cancel_ticket();

int main() {
    // 读取航班信息文件
    FILE *fp;
    if ((fp = fopen("flight.dat", "r")) == NULL) {
        printf("Failed to open file flight.dat.\n");
        exit(1);
    }
    while (fscanf(fp, "%s%s%s%s%s%f", flights[num_flights].flight_no, flights[num_flights].departure, flights[num_flights].destination, flights[num_flights].departure_time, flights[num_flights].arrival_time, &flights[num_flights].price) == 6) {
        num_flights++;
    }
    fclose(fp);

    int choice;
    do {
        print_menu();
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                add_flight();
                break;
            case 2:
                print_flights();
                break;
            case 3:
                book_ticket();
                break;
            case 4:
                print_tickets();
                break;
            case 5:
                cancel_ticket();
                break;
            case 6:
                printf("Goodbye!\n");
                break;
            default:
                printf("Invalid choice. Please try again.\n");
                break;
        }
    } while (choice != 6);

    return 0;
}

// 打印菜单
void print_menu() {
    printf("------------------------------\n");
    printf("Airline Ticket Booking System\n");
    printf("------------------------------\n");
    printf("1. Add a flight\n");
    printf("2. Print flights\n");
    printf("3. Book a ticket\n");
    printf("4. Print tickets\n");
    printf("5. Cancel a ticket\n");
    printf("6. Quit\n");
    printf("Please enter your choice: ");
}

// 添加航班信息
void add_flight() {
    if (num_flights >= 10) {
        printf("Cannot add more flights.\n");
        return;
    }
    printf("Please enter flight information:\n");
    printf("Flight No.: ");
    scanf("%s", flights[num_flights].flight_no);
    printf("Departure: ");
    scanf("%s", flights[num_flights].departure);
    printf("Destination: ");
    scanf("%s", flights[num_flights].destination);
    printf("Departure time: ");
    scanf("%s", flights[num_flights].departure_time);
    printf("Arrival time: ");
    scanf("%s", flights[num_flights].arrival_time);
    printf("Price: ");
    scanf("%f", &flights[num_flights].price);
    num_flights++;
    printf("Flight added successfully.\n");
}

// 打印航班信息
void print_flights() {
    printf("Flights:\n");
    printf("Flight No.\tDeparture\tDestination\tDeparture time\tArrival time\tPrice\n");
    for (int i = 0; i < num_flights; i++) {
        printf("%s\t%s\t%s\t%s\t%s\t%.2f\n", flights[i].flight_no, flights[i].departure, flights[i].destination, flights[i].departure_time, flights[i].arrival_time, flights[i].price);
    }
}

// 订票
void book_ticket() {
    // 读取订票信息文件
    FILE *fp;
    if ((fp = fopen(ticket_file, "a+")) == NULL) {
        printf("Failed to open file %s.\n", ticket_file);
        exit(1);
    }

    // 输入航班号
    char flight_no[10];
    printf("Please enter flight No.: ");
    scanf("%s", flight_no);

    // 查找航班信息
    int index = -1;
    for (int i = 0; i < num_flights; i++) {
        if (strcmp(flights[i].flight_no, flight_no) == 0) {
            index = i;
            break;
        }
    }
    if (index == -1) {
        printf("Flight not found.\n");
        return;
    }
    Flight flight = flights[index];

    // 输入乘客信息
    Passenger passenger;
    printf("Please enter passenger information:\n");
    printf("Name: ");
    scanf("%s", passenger.name);
    printf("Gender: ");
    scanf("%s", passenger.gender);
    printf("ID: ");
    scanf("%s", passenger.id);
    printf("Phone: ");
    scanf("%s", passenger.phone);

    // 生成订票信息
    Ticket ticket = { flight, passenger };

    // 写入订票信息文件
    fprintf(fp, "%s %s %s %s %s %.2f %s %s %s %s\n", flight.flight_no, flight.departure, flight.destination, flight.departure_time, flight.arrival_time, flight.price, passenger.name, passenger.gender, passenger.id, passenger.phone);
    fclose(fp);

    printf("Ticket booked successfully.\n");
}

// 打印订票信息
void print_tickets() {
    // 读取订票信息文件
    FILE *fp;
    if ((fp = fopen(ticket_file, "r")) == NULL) {
        printf("Failed to open file %s.\n", ticket_file);
        exit(1);
    }

    // 打印订票信息
    printf("Tickets:\n");
    printf("Flight No.\tDeparture\tDestination\tDeparture time\tArrival time\tPrice\tName\tGender\tID\tPhone\n");
    char flight_no[10], departure[20], destination[20], departure_time[20], arrival_time[20], name[20], gender[10], id[20], phone[20];
    float price;
    while (fscanf(fp, "%s%s%s%s%s%f%s%s%s%s", flight_no, departure, destination, departure_time, arrival_time, &price, name, gender, id, phone) == 10) {
        printf("%s\t%s\t%s\t%s\t%s\t%.2f\t%s\t%s\t%s\t%s\n", flight_no, departure, destination, departure_time, arrival_time, price, name, gender, id, phone);
    }
    fclose(fp);
}

// 退票
void cancel_ticket() {
    // 读取订票信息文件
    FILE *fp;
    if ((fp = fopen(ticket_file, "r")) == NULL) {
        printf("Failed to open file %s.\n", ticket_file);
        exit(1);
    }

    // 读取所有订票信息
    Ticket tickets[100];
    int num_tickets = 0;
    char flight_no[10], departure[20], destination[20], departure_time[20], arrival_time[20], name[20], gender[10], id[20], phone[20];
    float price;
    while (fscanf(fp, "%s%s%s%s%s%f%s%s%s%s", flight_no, departure, destination, departure_time, arrival_time, &price, name, gender, id, phone) == 10) {
        Flight flight = { flight_no, departure, destination, departure_time, arrival_time, price };
        Passenger passenger = { name, gender, id, phone };
        Ticket ticket = { flight, passenger };
        tickets[num_tickets++] = ticket;
    }
    fclose(fp);

    // 打印所有订票信息
    printf("Please select a ticket to cancel:\n");
    printf("No.\tFlight No.\tDeparture\tDestination\tDeparture time\tArrival time\tPrice\tName\tGender\tID\tPhone\n");
    for (int i = 0; i < num_tickets; i++) {
        printf("%d\t%s\t%s\t%s\t%s\t%s\t%.2f\t%s\t%s\t%s\t%s\n", i + 1, tickets[i].flight.flight_no, tickets[i].flight.departure, tickets[i].flight.destination, tickets[i].flight.departure_time, tickets[i].flight.arrival_time, tickets[i].flight.price, tickets[i].passenger.name, tickets[i].passenger.gender, tickets[i].passenger.id, tickets[i].passenger.phone);
    }

    // 选择需要退票的订票信息
    int ticket_no;
    printf("Please enter the ticket No.: ");
    scanf("%d", &ticket_no);
    if (ticket_no < 1 || ticket_no > num_tickets) {
        printf("Invalid ticket No.\n");
        return;
    }

    // 从文件中删除订票信息
    if ((fp = fopen(ticket_file, "w")) == NULL) {
        printf("Failed to open file %s.\n", ticket_file);
        exit(1);
    }
    for (int i = 0; i < num_tickets; i++) {
        if (i + 1 != ticket_no) {
            fprintf(fp, "%s %s %s %s %s %.2f %s %s %s %s\n", tickets[i].flight.flight_no, tickets[i].flight.departure, tickets[i].flight.destination, tickets[i].flight.departure_time, tickets[i].flight.arrival_time, tickets[i].flight.price, tickets[i].passenger.name, tickets[i].passenger.gender, tickets[i].passenger.id, tickets[i].passenger.phone);
        }
    }
    fclose(fp);

    printf("Ticket cancelled successfully.\n");
}

上述代码仅供参考，具体实现方式和细节可以根据项目需求进行修改和完善。