前言

操作系統：Windows下運行。如果需要在Linux運行（單機版），則需要修改刪除conio.h，自己寫個頭文件獲取鍵盤輸入。我已經寫好了getch.h文件，需要將其導入使用。

開發環境：CodeBlocks || VS Code ( gcc編譯 ）

開發語言：C

實現功能：登錄，訂票，退票

數據存儲：文本讀寫

涉及文件：

文件構建可以參考：碼云：傳送門? GitHub：傳送門

這幾個信息文件不能少！！！?少了程序跑不了！！！

相關文件下載：

*******************************************

*? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? *

*? ?碼云：傳送門? GitHub：傳送門? ? ?*

*? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? *

*******************************************

相關圖片（僅供參考）：程序是沒有涉及旅行社的

ps：圖片由PowerDesigner繪制而成

ER圖：

數據庫：

類圖：

用例圖：

訂票順序圖：

訂票狀態圖：

登錄活動圖：

以上圖片僅供參考，請自行斟酌

程序主界面：

?進入子功能需要賬號和密碼，存儲在passenger.txt文件中

ps：文件數據的順序就是結構體的順序

typedef struct Flight {char fid[20]; //航班號char fname[20]; //航班名稱char start[10]; //起點char end[10]; //終點int fnum; //票數 }Flight;typedef struct Passenger {char pid[20]; //身份證char pname[10]; //姓名char password[20]; //密碼char tell[20]; //電話 }Passenger;typedef struct Order {char pid[20]; //身份證char fid[20]; //航班號int num; //票數 }Order;

單機版（win）

注意頭文件使用的conio.h，此版本為windows，linux參考前言的代碼倉庫

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdbool.h> //#include "getch.h" #include <conio.h>#define MAX_Flight 50 // 最大航班數 #define MAX_Passenger 20 // 單航班最多乘客數 #define MAX_Order 50 // 最大訂票數typedef struct Flight {char fid[20]; //航班號char fname[20]; //航班名稱char start[10]; //起點char end[10]; //終點int fnum; //票數 }Flight;typedef struct Passenger {char pid[20]; //身份證char pname[10]; //姓名char password[20]; //密碼char tell[20]; //電話 }Passenger;typedef struct Order {char pid[20]; //身份證char fid[20]; //航班號int num; //票數 }Order;Flight *FLI; // 定義全局變量 Passenger *PAS; Order *ORD;char start[10]; //起點 char end[10]; //終點 char search_fid[50][20]; //符合條件的航班號 int search_fnum[50]; //符合條件的航班票數 int online = 0; //是否登錄的變量 char online_pid[20]; //在線用戶的身份證 int search_num = 0; //符合條件的航班數void init_sys(void); // 系統初始化 void show_flight(void); // 顯示航班表 void start_sys(void); // 系統開始運行 void exit_sys(void); // 退出系統 void menu(void); // 生成主菜單 void login(void); // 登錄 void logout(void); //用戶登出 void passenger_info(void); //查詢旅客信息 bool change_pas_info(void); //修改旅客信息 void search_start(void); // 生成查詢頁面 bool search(void); // 查詢航班 void order_list(void); // 生成訂單表 void del_order(void); // 退票 void clear_stdin(void); // 清除輸入緩沖區 char* get_str(char* str,size_t len); // 獲取字符串 char get_cmd(char start,char end); // 獲取cmd命令// 主函數 int main() {init_sys(); // 系統初始化start_sys(); // 系統開始運行exit_sys(); // 系統結束return 0; }// 系統初始化 void init_sys(void) {// 申請堆內存、加載數據FLI = calloc(MAX_Flight,sizeof(Flight));PAS = calloc(MAX_Passenger,sizeof(Passenger));ORD = calloc(MAX_Order,sizeof(Order));printf("system_init...\n");// 以只讀方式打開 order.txt,如果文件不存在則打開失敗，返回值為空。FILE* ofrp = fopen("order.txt","r");if(NULL == ofrp) // 打開失敗直接退出{printf("order.txt open failed!\n");exit(0);}int i = 0;for(i = 0; i < MAX_Order; i++) //讀取文本中的數據到內存，全局變量ORD中{ int num = 0;num = fscanf(ofrp,"%s %s %d\n", ORD[i].pid, ORD[i].fid, &ORD[i].num);}FILE* ffrp = fopen("flight.txt","r");if(NULL == ffrp){printf("flight.txt open failed!\n");exit(0);}for(i = 0; i < MAX_Flight; i++){int num = 0;num = fscanf(ffrp,"%s %s %s %s %d\n", FLI[i].fid, FLI[i].fname, FLI[i].start, FLI[i].end, &FLI[i].fnum);}FILE* pfrp = fopen("passenger.txt","r");if(NULL == pfrp){printf("passenger.txt open failed!\n");exit(0);}for(i = 0; i < MAX_Passenger; i++){int num = 0;num = fscanf(pfrp,"%s %s %s %s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);} }// 顯示航班表 void show_flight(void) {int i = 0;for(i = 0; i < MAX_Flight; i++){if(strlen(FLI[i].fid) != 0){printf("id:%s name:%s start:%s end:%s fnum:%d\n", FLI[i].fid, FLI[i].fname, FLI[i].start, FLI[i].end, FLI[i].fnum);}} }// 系統開始運行 void start_sys(void) {// 進入系統的業務流程控制//printf("系統開始運行...\n");//show_flight();while(true){menu();switch(get_cmd('0','7')) // 獲取鍵盤輸入{case '1': search_start(); break;case '2': order_list(); break;case '3': del_order(); break;case '4': passenger_info(); break;case '5': change_pas_info(); break;case '6': login(); break;case '7': logout(); break;case '0': return;}} }// 系統結束 void exit_sys(void) {printf("data insert...\n");FILE* ofwp = fopen("order.txt","w");printf("ready insert order.txt\n");int i= 0;for(i = 0; i < MAX_Order; i++) //數據存儲回本地{int num = 0;if(strlen(ORD[i].pid) != 0){num = fprintf(ofwp,"%s %s %d\n", ORD[i].pid, ORD[i].fid, ORD[i].num);//printf("insert order.txt success\n");}}// 以只寫方式打開文件flight.txt，如果文件不存在則創建，如果文件存在則把內容清空。FILE* ffwp = fopen("flight.txt","w");printf("insert flight.txt\n");for(i = 0; i < MAX_Flight; i++){int num = 0;if(strlen(FLI[i].fid) != 0){num = fprintf(ffwp,"%s %s %s %s %d\n", FLI[i].fid, FLI[i].fname, FLI[i].start, FLI[i].end, FLI[i].fnum);//printf("insert flight.txt success\n");}}FILE* pfwp = fopen("passenger.txt","w");printf("insert passenger.txt\n");for(i = 0; i < MAX_Passenger; i++){int num = 0;if(strlen(PAS[i].pid) != 0){num = fprintf(pfwp,"%s %s %s %s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);//printf("insert passenger.txt success\n");}}// 釋放內存、保存數據free(FLI);free(PAS);free(ORD);printf("exit...\n"); }// 生成主菜單 void menu(void) {printf("\n");printf("********************************\n");printf("| |\n");printf("| flight order system |\n");printf("* 1.search_flight *\n"); //查詢航班printf("| 2.order_list |\n"); //查詢訂票信息printf("* 3.del_order *\n"); //退訂printf("| 4.passenger_info |\n"); //查詢旅客信息printf("* 5.change_pas_info *\n"); //修改旅客信息printf("| 6.login |\n"); //用戶登錄printf("* 7.logout *\n"); //用戶登出printf("| 0.exit_sys |\n"); //退出系統printf("| |\n");printf("********************************\n");//printf("\n"); }// 登錄 void login(void) {if(online == 0) //如果沒有登錄{int i=0;int time = 0;while(time < 3){char entry_pid[20]; //臨時變量身份證char entry_pw[20]; //臨時變量密碼printf("please login!\n");printf("please entry pid:");get_str(entry_pid, 20);printf("please entry password:");get_str(entry_pw, 20);// 遍歷所有乘客for(i = 0; i < MAX_Passenger; i++){// 數據長度校驗if(strlen(entry_pid) == 0 || strlen(entry_pw) == 0){printf("pid or password can't be empty\n");time++;break;}// 成功匹配賬號密碼else if(strcmp(PAS[i].pid, entry_pid) == 0 && strcmp(PAS[i].password, entry_pw) == 0){printf("login success!\n");strncpy(online_pid, entry_pid, 20);online = 1;return;}else if(i == MAX_Passenger-1){printf("pid or password error\n");time++;}}}online = -1;printf("you have been locked,you can use this system now\n");}else if(online ==1){printf("you have been login\n");}else{printf("you have been locked,you can use this system now\n");}}// 用戶登出 void logout(void) {if(online == 1) //如果已經登錄{online = 0;printf("logout success\n");}else if(online == -1){printf("you have been locked,you can use this system now\n");}else{printf("you have not login\n");} }// 查詢旅客信息 void passenger_info(void) {if(online == 1) //如果已經登錄{//printf("online_pid:");//puts(online_pid);int i = 0;for(i = 0; i < MAX_Passenger; i++){if(strcmp(online_pid, PAS[i].pid) == 0){printf("pid:%s, pname:%s, password:%s, tell:%s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);break;}}}else if(online == -1){printf("you have been locked,you can use this system now\n");}else{printf("you have not login\n");} }//修改旅客信息 bool change_pas_info(void) {if(online == 1) //如果已經登錄{printf("your old info:\n");int i = 0;for(i = 0; i < MAX_Passenger; i++){if(strcmp(online_pid, PAS[i].pid) == 0){printf("pid:%s, pname:%s\npassword:%s, tell:%s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);break;}}char new_pid[20] = {0};char new_pname[10] = {0};char new_password[20] = {0};char new_tell[20] = {0};printf("please entry new pid:");get_str(new_pid, 20);printf("please entry new pname:");get_str(new_pname, 10);printf("please entry new password:");get_str(new_password, 20);printf("please entry new tell:");get_str(new_tell, 20);strncpy(PAS[i].pid, new_pid, 20);strncpy(PAS[i].pname, new_pname, 20);strncpy(PAS[i].password, new_password, 20);strncpy(PAS[i].tell, new_tell, 20);printf("change success\n");}else if(online == -1){printf("you have been locked,you can use this system now\n");}else{printf("you have not login\n");} }// 開始查詢航班 void search_start(void) {if(search()){printf("1.order\n");printf("0.back\n");char cmd = get_cmd('0', '1');if(cmd == '0'){return;//start_sys();}else{char fid[20]; // 選擇的航班號if(online == 1) // 如果已經登錄{printf("please entry fid:");get_str(fid, 20);if(0 == strlen(fid)){printf("fid is empty\n");}int i = 0;for(i = 0; i < search_num; i++){//printf("fid:%s s_fid:%s num:%d\n",fid,search_fid[i],search_fnum[i]);if(strcmp(fid,search_fid[i]) == 0 && search_fnum[i] > 0) //查詢到對應航班{printf("order success\n");int j = 0;for(j = 0; j < MAX_Flight; j++) // 遍歷航班表{if(strcmp(fid, FLI[j].fid) == 0){FLI[j].fnum--; //票數減1break;}}int k = 0;for(k = 0; k < MAX_Order; k++) // 遍歷訂票表{//printf("ready insert...\n");if(strlen(ORD[k].pid) == 0) // 在空位置插入數據{strcpy(ORD[k].pid, online_pid); // 插入當前用戶身份證strcpy(ORD[k].fid, search_fid[i]); // 插入當前選擇的航班號ORD[k].num = 1;printf("insert_to_order success\n");break;}}return;}else if(strcmp(fid,search_fid[i]) == 0 && search_fnum[i] == 0){printf("no ticket\n");search_start();}else if(i == MAX_Flight-1){printf("don't have this fid\n");search_start();}}}else if(online == -1){printf("you have been locked,you can use this system now\n");}else{login();}}} }// 查詢航班 bool search(void) {printf("start: \n");get_str(start,10);printf("end: \n");get_str(end,10);int i = 0;search_num = 0;// 遍歷所有航班for(i = 0; i < MAX_Flight; i++){if(strlen(start) == 0 || strlen(end) == 0){printf("start or end can't be empty\n");return false;}if(strcmp(FLI[i].start, start) == 0 && strcmp(FLI[i].end, end) == 0){printf("fid:%s, ticket_num:%d\n", FLI[i].fid, FLI[i].fnum);strncpy(search_fid[search_num], FLI[i].fid, 20);search_fnum[search_num] = FLI[i].fnum;//printf("search_fid[%d]:%s, search_fun[%d]:%d\n",search_num,search_fid[search_num],search_num,search_fnum[search_num]);++search_num;}if(0 == search_num && i == MAX_Flight-1){printf("no flight\n");return false;}if(search_num > 0 && i == MAX_Flight-1){//show_flight();return true;}} }// 輸出訂單信息 void order_list(void) {if(online == 1){int i = 0;for(i = 0; i < MAX_Order; i++){if(strcmp(online_pid, ORD[i].pid) == 0){//printf("online_pid:%s\n",online_pid);printf("fid:%s, pid:%s, ticket:%d\n", ORD[i].fid, ORD[i].pid, ORD[i].num);}}}else if(online == -1){printf("you have been locked,you can use this system now\n");}else{login();} }// 刪除訂單 void del_order(void) {if(online == 1){char fid[20];printf("order_list:\n");order_list();printf("please entry del_order fid:");get_str(fid, 20);int i = 0;// 遍歷所有訂單for(i = 0; i < MAX_Order; i++){if(strlen(fid) == 0) //判空{printf("del_order fid can't be empty\n");return;}if(strcmp(fid, ORD[i].fid) == 0){memset(ORD[i].pid, '\0', sizeof(ORD[i].pid));int j = 0;for(j = 0; j < MAX_Flight; j++){if(strcmp(fid, FLI[j].fid) == 0){FLI[j].fnum++; // 返還飛機票break;}}printf("delete success\n");return;}}}else if(online == -1){printf("you have been locked,you can use this system now\n");}else{login();}}// 清理輸入緩沖區 /*void clear_stdin(void) {stdin->_IO_read_ptr = stdin->_IO_read_end;//清理輸入緩沖區 } */// 讀取輸入字符串 char* get_str(char* str, size_t len) {if(NULL == str){puts("empty ptr！");return NULL;}char *in = fgets(str, len, stdin);size_t cnt = strlen(str);if('\n' == str[cnt-1]){str[cnt-1] = '\0';}else{scanf("%*[^\n]");scanf("%*c");}//clear_stdin();return str; }// 獲取cmd命令 char get_cmd(char start, char end) {//clear_stdin();printf("please entry cmd:");while(true){char val = getch();if(val >= start && val <= end){printf("%c\n",val);return val;}} }

TCP聯網版（win）

先運行服務端，再運行客戶端

因為懶，閹割了聯網版的旅客信息修改功能。

編譯參考?

gcc server.c -lwsock32 -o server

效果如下：

client.c

同理這里也是Windows版本，使用winsock實現tcp

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdbool.h> //#include "getch.h" #include <conio.h> #include <WinSock2.h>#pragma comment(lib,"ws2_32.lib")void start_sys(void); // 系統開始運行 char *send_cmd_recv_val(char* cmd); // 發送命令，接收返回 void show_flight(void); // 顯示航班表 void exit_sys(void); // 退出系統 void menu(void); // 生成主菜單 void login(void); // 登錄 void logout(void); // 用戶登出 void passenger_info(void); // 查詢旅客信息 void search_start(void); // 生成查詢頁面 char* search(void); // 查詢航班 void order_list(void); // 生成訂單表 void del_order(void); // 退票 char* get_str(char* str,size_t len); // 獲取字符串 char get_cmd(char start,char end); // 獲取cmd命令int main(int argv, char* argc[]) {system("chcp 65001");printf("編碼轉換完畢\n");start_sys();exit_sys();return 0; }// 發送命令，接收返回 char *send_cmd_recv_val(char* cmd) {//初始化WSADATA wsaData;WSAStartup(MAKEWORD(2, 2), &wsaData);//創建套接字SOCKET clntSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);//向服務器發送消息struct sockaddr_in sockAddr;memset(&sockAddr, 0, sizeof(sockAddr)); //每個字節都用0填充sockAddr.sin_family = PF_INET;sockAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");sockAddr.sin_port = htons(8888);connect(clntSock, (SOCKADDR*)& sockAddr, sizeof(SOCKADDR));static char buf[10240] = {0};// buf置0memset(buf, 0, sizeof(buf));send(clntSock, cmd, strlen(cmd) + sizeof(char), 0);recv(clntSock, buf, 10240, 0);//關閉套接字closesocket(clntSock);//終止dllWSACleanup();return buf; }// 顯示航班表 void show_flight(void) {printf("%s\n", send_cmd_recv_val("show_flight")); }// 系統開始運行 void start_sys(void) {// 進入系統的業務流程控制//printf("系統開始運行...\n");//show_flight();while(true){menu();switch(get_cmd('0','6')) // 獲取鍵盤輸入{case '1': search_start(); break;case '2': order_list(); break;case '3': del_order(); break;case '4': passenger_info(); break;case '5': login(); break;case '6': logout(); break;case '0': return;}} }// 系統結束 void exit_sys(void) {printf("%s\n", send_cmd_recv_val("exit_sys")); }// 生成主菜單 void menu(void) {printf("\n");printf("*********************************\n");printf("| |\n");printf("| 飛機訂票系統 |\n");printf("* 1.查詢航班 *\n"); //查詢航班printf("| 2.查詢訂票信息 |\n"); //查詢訂票信息printf("* 3.退訂 *\n"); //退訂printf("| 4.查詢旅客信息 |\n"); //查詢旅客信息printf("| 5.用戶登錄 |\n"); //用戶登錄printf("* 6.用戶登出 *\n"); //用戶登出printf("| 0.退出系統 |\n"); //退出系統printf("| |\n");printf("*********************************\n");//printf("\n"); }// 登錄 void login(void) {char entry_pid[20]; //臨時變量身份證char entry_pw[20]; //臨時變量密碼printf("請登錄!\n");printf("請輸入pid:");get_str(entry_pid, 20);printf("請輸入密碼:");get_str(entry_pw, 20);char buf[1024] = {0};snprintf(buf, 1024, "login pid:%s pw:%s", entry_pid, entry_pw);printf("%s\n", send_cmd_recv_val(buf)); }// 用戶登出 void logout(void) {printf("%s\n", send_cmd_recv_val("logout")); }// 查詢旅客信息 void passenger_info(void) {printf("%s\n", send_cmd_recv_val("passenger_info")); }// 開始查詢航班 void search_start(void) {char buf[10240] = {0};snprintf(buf, 10240, "%s", search());if(strncmp(buf, "起始地 或 目的地 不能為空\n", 50) != 0 && strncmp(buf, "沒有航班\n", 50) != 0){printf("1.訂票\n");printf("0.返回\n");char cmd = get_cmd('0', '1');memset(buf, 0, sizeof(buf));if(cmd == '0'){snprintf(buf, 10240, "%s", send_cmd_recv_val("0.返回"));printf("%s", buf);return;//start_sys();}else{snprintf(buf, 10240, "%s", send_cmd_recv_val("1.訂票"));char fid[20]; // 選擇的航班號printf("請輸入fid:");get_str(fid, 20);snprintf(buf, 1024, "order_ticket fid:%s", fid);printf("%s\n", send_cmd_recv_val(buf));}} }// 查詢航班 char* search(void) {char start[10] = {0};char end[10] = {0};printf("起始地: \n");get_str(start, 10);printf("目的地: \n");get_str(end, 10);char buf[1024] = {0};static char buf2[10240] = {0};memset(buf2, 0, sizeof(buf2));snprintf(buf, 1024, "search start:%s end:%s", start, end);snprintf(buf2, 10240, "%s", send_cmd_recv_val(buf));printf("%s", buf2);return buf2; }// 輸出訂單信息 void order_list(void) {printf("%s\n", send_cmd_recv_val("order_list")); }// 刪除訂單 void del_order(void) {printf("%s\n", send_cmd_recv_val("order_list"));char fid[20];printf("請輸入要刪除的fid:");get_str(fid, 20);char buf[1024] = {0};snprintf(buf, 1024, "del_order fid:%s", fid);printf("%s\n", send_cmd_recv_val(buf)); }// 讀取輸入字符串 char* get_str(char* str, size_t len) {if(NULL == str){puts("空指針！");return NULL;}char *in = fgets(str, len, stdin);size_t cnt = strlen(str);if('\n' == str[cnt-1]){str[cnt-1] = '\0';}else{scanf("%*[^\n]");scanf("%*c");}//clear_stdin();return str; }// 獲取cmd命令 char get_cmd(char start, char end) {//clear_stdin();printf("請輸入命令:");while(true){char val = getch();if(val >= start && val <= end){printf("%c\n",val);return val;}} }

server.c

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdbool.h> //#include "getch.h" #include <conio.h> #include <WinSock2.h> #pragma comment(lib,"ws2_32.lib") //加載ws2_32.dll#define MAX_Flight 50 // 最大航班數 #define MAX_Passenger 20 // 單航班最多乘客數 #define MAX_Order 50 // 最大訂票數typedef struct Flight {char fid[20]; //航班號char fname[20]; //航班名稱char start[10]; //起點char end[10]; //終點int fnum; //票數 }Flight;typedef struct Passenger {char pid[20]; //身份證char pname[10]; //姓名char password[20]; //密碼char tell[20]; //電話 }Passenger;typedef struct Order {char pid[20]; //身份證char fid[20]; //航班號int num; //票數 }Order;Flight *FLI; // 定義全局變量 Passenger *PAS; Order *ORD;char search_fid[50][20]; // 符合條件的航班號 int search_fnum[50]; // 符合條件的航班票數 int online = 0; // 是否登錄的變量 char online_pid[20]; // 在線用戶的身份證 int search_num = 0; // 符合條件的航班數char *get_request_content(char *src, char *content, int max_len); // 解析請求的內容 void init_sys(void); // 系統初始化 char* show_flight(void); // 顯示航班表 void exit_sys(void); // 退出系統 char* login(char* pid, char* pw); // 登錄 char* logout(void); // 用戶登出 char* passenger_info(void); // 查詢旅客信息 char* order_ticket(char* fid); // 生成查詢頁面 char* search(char* start, char* end); // 查詢航班 char* order_list(void); // 生成訂單表 char* del_order(char* fid); // 退票 char* get_str(char* str,size_t len); // 獲取字符串 char get_cmd(char start,char end); // 獲取cmd命令// 主函數 int main(int argv, char* argc[]) {system("chcp 65001");printf("編碼轉換完畢\n");// 系統初始化init_sys();// 初始化WSADATA wsaData;WSAStartup(MAKEWORD(2, 2), &wsaData);//創建套接字SOCKET servSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);//綁定套接字struct sockaddr_in sockAddr;memset(&sockAddr, 0, sizeof(sockAddr)); //每個字節用0填充sockAddr.sin_family = PF_INET; //使用ipv4sockAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");sockAddr.sin_port = htons(8888); //端口bind(servSock, (SOCKADDR*)&sockAddr, sizeof(SOCKADDR));//進入監聽狀態listen(servSock, 20);char cmd[1024] = {0};char buf[10240] = {0};for(;;){// 接收客戶端消息SOCKADDR clntAddr;int nSize = sizeof(SOCKADDR);SOCKET clntSock = accept(servSock, (SOCKADDR*)&clntAddr, &nSize);memset(cmd, 0, sizeof(cmd));memset(buf, 0, sizeof(buf));printf("收到客戶端命令:");recv(clntSock, cmd, 1024, 0);printf("%s\n", cmd);if(NULL != strstr(cmd, "exit_sys")){//關閉套接字closesocket(clntSock);break;}else if(NULL != strstr(cmd, "search")){char* start = get_request_content(cmd, "start:", 20);char* end = get_request_content(cmd, "end:", 20);snprintf(buf, 10240, "%s", search(start, end));send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(0 == strncmp(cmd, "1.訂票", 10)){snprintf(buf, 1024, "訂票...\n");send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(0 == strncmp(cmd, "0.返回", 10)){snprintf(buf, 1024, "返回...\n");send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(NULL != strstr(cmd, "order_ticket")){char* fid = get_request_content(cmd, "fid:", 20);snprintf(buf, 1024, "%s", order_ticket(fid));send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(NULL != strstr(cmd, "order_list")){snprintf(buf, 10240, "%s", order_list());send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(NULL != strstr(cmd, "del_order")){char* fid = get_request_content(cmd, "fid:", 20);snprintf(buf, 10240, "%s", del_order(fid));}else if(NULL != strstr(cmd, "passenger_info")){snprintf(buf, 10240, "%s", passenger_info());send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(NULL != strstr(cmd, "login")){char* pid = get_request_content(cmd, "pid:", 20);char* pw = get_request_content(cmd, "pw:", 20);snprintf(buf, 10240, "%s", login(pid, pw));send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else if(NULL != strstr(cmd, "logout")){snprintf(buf, 10240, "%s", logout());send(clntSock, buf, strlen(buf) + sizeof(char), 0);}else{snprintf(buf, 20, "錯誤命令!");send(clntSock, buf, strlen(buf) + sizeof(char), 0);}//關閉套接字closesocket(clntSock);}//關閉套接字closesocket(servSock);//終止dll使用WSACleanup();exit_sys(); // 退出系統return 0; }// 解析請求的內容 char *get_request_content(char *src, char *content, int max_len) {char *result = (char *)malloc((max_len) * sizeof(char));memset(result, 0, max_len);int i = 0;char *temp = NULL;temp = strstr(src, content);if (temp == NULL){return NULL;}temp += strlen(content);while (1){if (max_len == i)break;if (temp[i] != ' '){result[i] = temp[i];i++;}else{break;}}return result; }// 系統初始化 void init_sys(void) {// 申請堆內存、加載數據FLI = calloc(MAX_Flight,sizeof(Flight));PAS = calloc(MAX_Passenger,sizeof(Passenger));ORD = calloc(MAX_Order,sizeof(Order));printf("系統初始化中...\n");// 以只讀方式打開 order.txt,如果文件不存在則打開失敗，返回值為空。FILE* ofrp = fopen("order.txt","r");if(NULL == ofrp) // 打開失敗直接退出{printf("order.txt 打開失敗!\n");exit(0);}int i = 0;for(i = 0; i < MAX_Order; i++) //讀取文本中的數據到內存，全局變量ORD中{ int num = 0;num = fscanf(ofrp,"%s %s %d\n", ORD[i].pid, ORD[i].fid, &ORD[i].num);}FILE* ffrp = fopen("flight.txt","r");if(NULL == ffrp){printf("flight.txt 打開失敗!\n");exit(0);}for(i = 0; i < MAX_Flight; i++){int num = 0;num = fscanf(ffrp,"%s %s %s %s %d\n", FLI[i].fid, FLI[i].fname, FLI[i].start, FLI[i].end, &FLI[i].fnum);}FILE* pfrp = fopen("passenger.txt","r");if(NULL == pfrp){printf("passenger.txt 打開失敗!\n");exit(0);}for(i = 0; i < MAX_Passenger; i++){int num = 0;num = fscanf(pfrp,"%s %s %s %s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);}printf("系統初始化完畢!\n"); }// 顯示航班表 char* show_flight(void) {static char buf[10240] = {0};memset(buf, 0, sizeof(buf));int i = 0;for(i = 0; i < MAX_Flight; i++){if(strlen(FLI[i].fid) != 0){snprintf(buf, 10240, "%sid:%s name:%s start:%s end:%s fnum:%d\n", buf, FLI[i].fid, FLI[i].fname, FLI[i].start, FLI[i].end, FLI[i].fnum);}}return buf; }// 系統結束 void exit_sys(void) {printf("數據插入中...\n");FILE* ofwp = fopen("order.txt","w");printf("準備插入 order.txt\n");int i= 0;for(i = 0; i < MAX_Order; i++) //數據存儲回本地{int num = 0;if(strlen(ORD[i].pid) != 0){num = fprintf(ofwp,"%s %s %d\n", ORD[i].pid, ORD[i].fid, ORD[i].num);//printf("insert order.txt success\n");}}// 以只寫方式打開文件flight.txt，如果文件不存在則創建，如果文件存在則把內容清空。FILE* ffwp = fopen("flight.txt","w");printf("準備插入 flight.txt\n");for(i = 0; i < MAX_Flight; i++){int num = 0;if(strlen(FLI[i].fid) != 0){num = fprintf(ffwp,"%s %s %s %s %d\n", FLI[i].fid, FLI[i].fname, FLI[i].start, FLI[i].end, FLI[i].fnum);//printf("insert flight.txt success\n");}}FILE* pfwp = fopen("passenger.txt","w");printf("準備插入 passenger.txt\n");for(i = 0; i < MAX_Passenger; i++){int num = 0;if(strlen(PAS[i].pid) != 0){num = fprintf(pfwp,"%s %s %s %s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);//printf("insert passenger.txt success\n");}}// 釋放內存、保存數據free(FLI);free(PAS);free(ORD);printf("程序退出\n"); }// 登錄 char* login(char* pid, char* pw) {static char buf[100] = {0};memset(buf, 0, sizeof(buf));if(online == 0) //如果沒有登錄{int i = 0;int time = 0;// 遍歷所有乘客for(i = 0; i < MAX_Passenger; i++){// 數據長度校驗if(strlen(pid) == 0 || strlen(pw) == 0){printf("pid 或 password 不能為空\n");time++;break;}// 成功匹配賬號密碼else if(strcmp(PAS[i].pid, pid) == 0 && strcmp(PAS[i].password, pw) == 0){snprintf(buf , 100, "登錄成功!\n");strncpy(online_pid, pid, 20);online = 1;return buf;}else if(i == MAX_Passenger-1){snprintf(buf , 100, "pid 或 password 錯誤\n");return buf;}}}else if(online == 1){snprintf(buf , 100, "你還沒登錄呢\n");return buf;}else{snprintf(buf , 100, "你已被鎖定，禁止使用此系統\n");return buf;}}// 用戶登出 char* logout(void) {static char buf[100] = {0};memset(buf, 0, sizeof(buf));if(online == 1) //如果已經登錄{online = 0;snprintf(buf, 100, "登錄成功\n");}else if(online == -1){snprintf(buf, 100, "你已被鎖定，禁止使用此系統\n");}else{snprintf(buf, 100, "你還沒有登錄呢\n");}return buf; }// 查詢旅客信息 char* passenger_info(void) {static char buf[100] = {0};memset(buf, 0, sizeof(buf));if(online == 1) //如果已經登錄{//printf("online_pid:");//puts(online_pid);int i = 0;for(i = 0; i < MAX_Passenger; i++){if(strcmp(online_pid, PAS[i].pid) == 0){snprintf(buf, 100, "pid:%s, pname:%s, password:%s, tell:%s\n", PAS[i].pid, PAS[i].pname, PAS[i].password, PAS[i].tell);break;}}}else if(online == -1){snprintf(buf, 100, "你已被鎖定，禁止使用此系統\n");}else{snprintf(buf, 100, "你還沒有登錄呢\n");}return buf; }// 訂票 char* order_ticket(char* fid) {static char buf[100] = {0};memset(buf, 0, sizeof(buf));if(online == 1) // 如果已經登錄{if(0 == strlen(fid)){snprintf(buf, 100, "fid 為空\n");return buf;}int i = 0;for(i = 0; i < search_num; i++){//printf("fid:%s s_fid:%s num:%d\n",fid,search_fid[i],search_fnum[i]);if(strcmp(fid,search_fid[i]) == 0 && search_fnum[i] > 0) //查詢到對應航班{snprintf(buf, 100, "訂票成功\n");int j = 0;for(j = 0; j < MAX_Flight; j++) // 遍歷航班表{if(strcmp(fid, FLI[j].fid) == 0){FLI[j].fnum--; //票數減1break;}}int k = 0;for(k = 0; k < MAX_Order; k++) // 遍歷訂票表{//printf("ready insert...\n");if(strlen(ORD[k].pid) == 0) // 在空位置插入數據{strcpy(ORD[k].pid, online_pid); // 插入當前用戶身份證strcpy(ORD[k].fid, search_fid[i]); // 插入當前選擇的航班號ORD[k].num = 1;printf("插入訂票信息成功\n");break;}}return buf;}else if(strcmp(fid,search_fid[i]) == 0 && search_fnum[i] == 0){snprintf(buf, 100, "無票\n");return buf;}else if(i == MAX_Flight-1){snprintf(buf, 100, "不存在此fid\n");return buf;}}}else if(online == -1){snprintf(buf, 100, "你已被鎖定，禁止使用此系統\n");return buf;}else{snprintf(buf, 100, "請登錄!\n");return buf;} }// 查詢航班 char* search(char* start, char* end) {printf("[函數()] 進入 search(%s, %s)\n", start, end);static char buf[10240] = {0};memset(buf, 0, sizeof(buf));int i = 0;search_num = 0;// 遍歷所有航班for(i = 0; i < MAX_Flight; i++){if(strlen(start) == 0 || strlen(end) == 0){snprintf(buf, 10240, "start 或 end 不能為空\n");printf("%s", buf);return buf;}if(strcmp(FLI[i].start, start) == 0 && strcmp(FLI[i].end, end) == 0){snprintf(buf, 10240, "%sfid:%s, 票數:%d\n", buf, FLI[i].fid, FLI[i].fnum);strncpy(search_fid[search_num], FLI[i].fid, 20);search_fnum[search_num] = FLI[i].fnum;//printf("search_fid[%d]:%s, search_fun[%d]:%d\n",search_num,search_fid[search_num],search_num,search_fnum[search_num]);++search_num;}if(0 == search_num && i == MAX_Flight-1){snprintf(buf, 10240, "沒有航班\n");printf("%s", buf);return buf;}if(search_num > 0 && i == MAX_Flight-1){printf("%s", buf);return buf;}}return buf; }// 輸出訂單信息 char* order_list(void) {static char buf[10240] = {0};memset(buf, 0, sizeof(buf));if(online == 1){int i = 0;for(i = 0; i < MAX_Order; i++){if(strcmp(online_pid, ORD[i].pid) == 0){//printf("online_pid:%s\n",online_pid);snprintf(buf, 10240, "%sfid:%s, pid:%s, ticket:%d\n", buf, ORD[i].fid, ORD[i].pid, ORD[i].num);}}}else if(online == -1){snprintf(buf, 100, "你已被鎖定，禁止使用此系統\n");}else{snprintf(buf, 100, "請登錄!\n");}return buf; }// 刪除訂單 char* del_order(char* fid) {printf("[函數()] 進入 del_order(%s)\n", fid);static char buf[100] = {0};memset(buf, 0, sizeof(buf));if(online == 1){int i = 0;// 遍歷所有訂單for(i = 0; i < MAX_Order; i++){if(strlen(fid) == 0) //判空{snprintf(buf, 100, "del_order 的 fid 不能為空\n");return buf;}if(strcmp(fid, ORD[i].fid) == 0){memset(ORD[i].pid, '\0', sizeof(ORD[i].pid));int j = 0;for(j = 0; j < MAX_Flight; j++){if(strcmp(fid, FLI[j].fid) == 0){FLI[j].fnum++; // 返還飛機票break;}}snprintf(buf, 100, "刪除成功\n");return buf;}}}else if(online == -1){snprintf(buf, 100, "你已被鎖定，禁止使用此系統\n");}else{snprintf(buf, 100, "請登錄!\n");}printf("%s", buf);return buf; }// 清理輸入緩沖區 /*void clear_stdin(void) {stdin->_IO_read_ptr = stdin->_IO_read_end;//清理輸入緩沖區 } */// 讀取輸入字符串 char* get_str(char* str, size_t len) {if(NULL == str){puts("空指針！");return NULL;}char *in = fgets(str, len, stdin);size_t cnt = strlen(str);if('\n' == str[cnt-1]){str[cnt-1] = '\0';}else{scanf("%*[^\n]");scanf("%*c");}//clear_stdin();return str; }// 獲取cmd命令 char get_cmd(char start, char end) {//clear_stdin();printf("請輸入命令:");while(true){char val = getch();if(val >= start && val <= end){printf("%c\n",val);return val;}} }

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