请给我一个大一能写出的简单的飞机购票系统c语言

好的，以下是一个适合大一学生的简单飞机购票系统C语言代码示例：

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

#define MAX_FLIGHTS 5
#define MAX_NAME 50

typedef struct {
    char flight_number[MAX_NAME];
    char departure_city[MAX_NAME];
    char arrival_city[MAX_NAME];
    char departure_time[MAX_NAME];
    char arrival_time[MAX_NAME];
    int available_seats;
    float ticket_price;
} Flight;

Flight flights[MAX_FLIGHTS];
int num_flights = 0;

void add_flight() {
    if (num_flights >= MAX_FLIGHTS) {
        printf("Sorry, the system can't add more flights!\n");
        return;
    }

    printf("Please enter the flight number: ");
    scanf("%s", flights[num_flights].flight_number);

    printf("Please enter the departure city: ");
    scanf("%s", flights[num_flights].departure_city);

    printf("Please enter the arrival city: ");
    scanf("%s", flights[num_flights].arrival_city);

    printf("Please enter the departure time: ");
    scanf("%s", flights[num_flights].departure_time);

    printf("Please enter the arrival time: ");
    scanf("%s", flights[num_flights].arrival_time);

    printf("Please enter the number of available seats: ");
    scanf("%d", &flights[num_flights].available_seats);

    printf("Please enter the ticket price: ");
    scanf("%f", &flights[num_flights].ticket_price);

    num_flights++;

    printf("The flight has been added successfully!\n");
}

void display_flights() {
    printf("Flight Number\tDeparture City\tArrival City\tDeparture Time\tArrival Time\tAvailable Seats\tTicket Price\n");
    for (int i = 0; i < num_flights; i++) {
        printf("%s\t\t%s\t\t%s\t\t%s\t%s\t%d\t\t%.2f\n", flights[i].flight_number, flights[i].departure_city, flights[i].arrival_city, flights[i].departure_time, flights[i].arrival_time, flights[i].available_seats, flights[i].ticket_price);
    }
}

void book_flight() {
    char flight_number[MAX_NAME];
    int num_seats;

    printf("Please enter the flight number you want to book: ");
    scanf("%s", flight_number);

    for (int i = 0; i < num_flights; i++) {
        if (strcmp(flights[i].flight_number, flight_number) == 0) {
            printf("Please enter the number of seats you want to book: ");
            scanf("%d", &num_seats);

            if (num_seats > flights[i].available_seats) {
                printf("Sorry, there are not enough available seats on this flight.\n");
                return;
            }

            flights[i].available_seats -= num_seats;

            float total_price = num_seats * flights[i].ticket_price;

            printf("The booking has been made successfully! The total price is %.2f. Enjoy your flight.\n", total_price);
            return;
        }
    }

    printf("Sorry, the flight number you entered is not valid.\n");
}

int main() {
    int option;

    do {
        printf("\n\n");
        printf("Welcome to the airline booking system!\n");
        printf("1. Add a flight\n");
        printf("2. Display all flights\n");
        printf("3. Book a flight\n");
        printf("4. Exit\n");
        printf("Please enter your choice: ");
        scanf("%d", &option);

        switch (option) {
            case 1:
                add_flight();
                break;
            case 2:
                display_flights();
                break;
            case 3:
                book_flight();
                break;
            case 4:
                printf("Thank you for using the system. Goodbye!\n");
                exit(0);
            default:
                printf("Sorry, the option you entered is not valid.\n");
        }
    } while (1);

    return 0;
}

以上代码实现了一个简单的飞机购票系统，包括添加航班、展示所有航班、预订航班等功能。在这个简单的系统中，每个航班包括起飞城市、到达城市、起飞时间、到达时间、可用座位数和票价等信息。用户可以选择预订航班，并输入所需的座位数，系统会根据座位数计算总价并输出。