用C语言数据结构设计一个火车订票系统

好的，下面是一个简单的火车订票系统的 C 语言实现，包括火车车次信息、座位信息和订单信息的存储和处理。

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

#define MAX_TRAIN_NUM 100         // 最大火车车次数
#define MAX_SEAT_NUM 1000         // 最大座位数
#define MAX_ORDER_NUM 10000       // 最大订单数

struct train {
    char number[10];             // 车次编号
    char start[20];              // 起始站
    char dest[20];               // 终点站
    int seat_left[MAX_SEAT_NUM]; // 剩余座位数
};

struct order {
    char name[20];               // 订票人姓名
    char train_number[10];       // 车次编号
    int seat;                    // 座位号
};

struct train trains[MAX_TRAIN_NUM];  // 火车车次信息
struct order orders[MAX_ORDER_NUM];  // 订单信息

int train_num = 0;                   // 火车车次数
int seat_num = 0;                    // 座位数
int order_num = 0;                   // 订单数

// 添加火车车次
void add_train(char* number, char* start, char* dest, int* seat_left) {
    if (train_num >= MAX_TRAIN_NUM) {
        printf("The train list is full!\n");
        return;
    }
    strcpy(trains[train_num].number, number);
    strcpy(trains[train_num].start, start);
    strcpy(trains[train_num].dest, dest);
    memcpy(trains[train_num].seat_left, seat_left, sizeof(int) * seat_num);
    train_num++;
}

// 查找火车车次
int find_train(char* number) {
    for (int i = 0; i < train_num; i++) {
        if (strcmp(trains[i].number, number) == 0) {
            return i;
        }
    }
    return -1;
}

// 订票
void order_ticket(char* name, char* number, int seat) {
    int train_index = find_train(number);
    if (train_index == -1) {
        printf("The train is not found!\n");
        return;
    }
    if (seat < 1 || seat > seat_num) {
        printf("Invalid seat number!\n");
        return;
    }
    if (trains[train_index].seat_left[seat - 1] <= 0) {
        printf("The seat is already occupied!\n");
        return;
    }
    strcpy(orders[order_num].name, name);
    strcpy(orders[order_num].train_number, number);
    orders[order_num].seat = seat;
    trains[train_index].seat_left[seat - 1]--;
    order_num++;
    printf("Order success!\n");
}

// 取消订单
void cancel_order(char* name, char* number, int seat) {
    for (int i = 0; i < order_num; i++) {
        if (strcmp(orders[i].name, name) == 0 &&
            strcmp(orders[i].train_number, number) == 0 &&
            orders[i].seat == seat) {
            int train_index = find_train(number);
            if (train_index == -1) {
                printf("The train is not found!\n");
                return;
            }
            trains[train_index].seat_left[seat - 1]++;
            for (int j = i; j < order_num - 1; j++) {
                orders[j] = orders[j + 1];
            }
            order_num--;
            printf("Cancel order success!\n");
            return;
        }
    }
    printf("The order is not found!\n");
}

// 显示订单
void show_order(char* name) {
    printf("Orders of %s:\n", name);
    for (int i = 0; i < order_num; i++) {
        if (strcmp(orders[i].name, name) == 0) {
            printf("Train number: %s, seat: %d\n", orders[i].train_number, orders[i].seat);
        }
    }
}

int main() {
    char number[10], start[20], dest[20], name[20];
    int seat_left[MAX_SEAT_NUM], seat;
    int op;
    while (1) {
        printf("\n1. Add train\n");
        printf("2. Order ticket\n");
        printf("3. Cancel order\n");
        printf("4. Show order\n");
        printf("0. Exit\n");
        printf("Enter operation number: ");
        scanf("%d", &op);
        switch (op) {
            case 0:
                return 0;
            case 1:
                printf("Enter train number, start, destination, and seat left: ");
                scanf("%s %s %s", number, start, dest);
                for (int i = 0; i < seat_num; i++) {
                    scanf("%d", &seat_left[i]);
                }
                add_train(number, start, dest, seat_left);
                break;
            case 2:
                printf("Enter your name, train number, and seat number: ");
                scanf("%s %s %d", name, number, &seat);
                order_ticket(name, number, seat);
                break;
            case 3:
                printf("Enter your name, train number, and seat number: ");
                scanf("%s %s %d", name, number, &seat);
                cancel_order(name, number, seat);
                break;
            case 4:
                printf("Enter your name: ");
                scanf("%s", name);
                show_order(name);
                break;
            default:
                printf("Invalid operation number!\n");
                break;
        }
    }
    return 0;
}

以上就是一个简单的火车订票系统的 C 语言实现，包括火车车次信息、座位信息和订单信息的存储和处理。