火车售票系统C语言实现

火车售票系统的C语言实现需要考虑以下几个方面：

1. 数据结构：需要定义车次、座位、乘客等数据结构，以便于存储和管理数据。

2. 界面设计：需要设计用户界面，包括菜单、输入输出等，以便于用户进行操作。

3. 数据库管理：需要使用文件或数据库等方式存储数据，以便于查询和修改。

4. 逻辑处理：需要编写相应的算法和逻辑，实现售票、退票、查询等功能。

以下是一个简单的火车售票系统的C语言实现示例：

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

#define MAX_TRAIN_NUM 100
#define MAX_SEAT_NUM 100

typedef struct {
char train_num[10];
int seat_num[MAX_SEAT_NUM];
int seat_count;
} Train;

Train trains[MAX_TRAIN_NUM];
int train_count = 0;

void add_train() {
Train train;
printf("请输入车次号：");
scanf("%s", train.train_num);
printf("请输入座位数：");
scanf("%d", &train.seat_count);
for (int i = 0; i < train.seat_count; i++) {
train.seat_num[i] = i + 1;
}
trains[train_count++] = train;
printf("添加成功！\n");
}

void sell_ticket() {
char train_num[10];
int seat_num;
printf("请输入车次号：");
scanf("%s", train_num);
for (int i = 0; i < train_count; i++) {
if (strcmp(trains[i].train_num, train_num) == 0) {
printf("请输入座位号：");
scanf("%d", &seat_num);
if (seat_num < 1 || seat_num > trains[i].seat_count) {
printf("座位号无效！\n");
return;
}
if (trains[i].seat_num[seat_num - 1] == 0) {
printf("该座位已售出！\n");
return;
}
trains[i].seat_num[seat_num - 1] = 0;
printf("售票成功！\n");
return;
}
}
printf("车次号无效！\n");
}

void refund_ticket() {
char train_num[10];
int seat_num;
printf("请输入车次号：");
scanf("%s", train_num);
for (int i = 0; i < train_count; i++) {
if (strcmp(trains[i].train_num, train_num) == 0) {
printf("请输入座位号：");
scanf("%d", &seat_num);
if (seat_num < 1 || seat_num > trains[i].seat_count) {
printf("座位号无效！\n");
return;
}
if (trains[i].seat_num[seat_num - 1] == 1) {
printf("该座位未售出！\n");
return;
}
trains[i].seat_num[seat_num - 1] = seat_num;
printf("退票成功！\n");
return;
}
}
printf("车次号无效！\n");
}

void query_train() {
char train_num[10];
printf("请输入车次号：");
scanf("%s", train_num);
for (int i = 0; i < train_count; i++) {
if (strcmp(trains[i].train_num, train_num) == 0) {
printf("车次号：%s\n", trains[i].train_num);
printf("座位数：%d\n", trains[i].seat_count);
printf("已售座位：");
for (int j = 0; j < trains[i].seat_count; j++) {
if (trains[i].seat_num[j] == 0) {
printf("%d ", j + 1);
}
}
printf("\n");
return;
}
}
printf("车次号无效！\n");
}

void menu() {
printf("1. 添加车次\n");
printf("2. 售票\n");
printf("3. 退票\n");
printf("4. 查询车次\n");
printf("5. 退出\n");
}

int main() {
int choice;
while (1) {
menu();
printf("请输入选项：");
scanf("%d", &choice);
switch (choice) {
case 1:
add_train();
break;
case 2:
sell_ticket();
break;
case 3:
refund_ticket();
break;
case 4:
query_train();
break;
case 5:
exit(0);
default:
printf("选项无效！\n");
break;
}
}
return 0;
}