嘿嘿，今天继续来完成哥哥我的飞机订票系统。
废话不多说，先把主界面对话框窗口过程贴出来：
//主界面_窗口过程
BOOL CALLBACK MainDlgProc(HWND hMainDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){
switch (uMsg)
{
case WM_INITDIALOG:
{
if (hIcon)
SendMessage(hMainDlg, WM_SETICON, ICON_SMALL, (LPARAM)hIcon);
}//WM_INITDIALOG
return TRUE;
case WM_CLOSE:
{
//关闭程序时将信息保存
if (WriteOrderData(hMainDlg) && WriteAccountData(hMainDlg) && WriteFlightData(hMainDlg))
EndDialog(hMainDlg, 0);
else
MessageBox(hMainDlg, TEXT("保存信息错误！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
}//WM_CLOSE
return TRUE;
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case IDC_SEARCH:
{
SearchFlight(hMainDlg); //查找航班
break;
}
case IDC_TICKET:
{
BookTickets(hMainDlg); //订票
break;
}
case IDC_RETURNTICKET:
{
ReturnTickets(hMainDlg); //退票
break;
}
case IDC_ENTRY:
{ //录入航班对话框
DialogBox(hInst, MAKEINTRESOURCE(IDD_ENTRY), NULL, (DLGPROC)EntryFlightProc);
break;
}
case IDC_MODIFYFLIGHT:
{ //修改航班信息对话框
DialogBox(hInst, MAKEINTRESOURCE(IDD_MODIFYFLT), NULL, (DLGPROC)ModifyFlightProc);
break;
}
}//switch
}//WM_COMMAND
return TRUE;
}//switch
return FALSE;
}//MainDlgProc()
如上述代码所示，点击查找、订票、退票、航班录入、修改航班信息按钮都会调用相应的函数。下面来看实现各个功能的代码：
//查找航班
BOOL SearchFlight(HWND hMainDlg){
int flag1 = 0; //if(flag1==0) 出发地、目的地查询航班，else：航班号查航班
int flag2 = 0;
Flight *p;
TCHAR szBuffer[256] = {TEXT("\0")};
TCHAR szDeparture[16], szDestination[16], szFltNum[16], szDate[16];
HWND hEdit = GetDlgItem(hMainDlg, IDC_INFORMATION);
GetDlgItemText(hMainDlg, IDC_DEPARTURE, szDeparture, 15); //获取用户输入出发地
GetDlgItemText(hMainDlg, IDC_DESTINATION, szDestination, 15); //获取用户输入目的地
GetDlgItemText(hMainDlg, IDC_FLIGHTNUM, szFltNum, 15); //获取用户输入航班号
GetDlgItemText(hMainDlg, IDC_DATE, szDate, 15); //获取用户选择航班时间
SetDlgItemText(hMainDlg, IDC_INFORMATION, szBuffer); //清空航班信息区域文本
if (lstrlen(szFltNum) || (!(lstrlen(szDeparture)) && !(lstrlen(szDestination))))
flag1++;
else if (!(lstrlen(szDeparture))){
MessageBox(hMainDlg, TEXT("请输入出发地！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
else if (!(lstrlen(szDestination))){
MessageBox(hMainDlg, TEXT("请输入目的地！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
if (flag1 && !(lstrlen(szFltNum))){
MessageBox(hMainDlg, TEXT("请输入出发地、目的地或航班号以查询航班！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
p = flightlink.head;
while (p){ //查找航班并输出
if (flag1){ //按航班号查找
if (!lstrcmp(p->Flight_Number, szFltNum) && !lstrcmp(p->Date,szDate)){//查找到符合航班，输出
if (!flag2){ //若该航班为第一班符合条件的航班
_stprintf(szBuffer, TEXT("航班号\t出发地\t目的地\t起飞时间\t降落时间\t余座\t价格\t折扣\t出发日期\n"));
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
}//if
flag2++;
PrintFlight(hMainDlg, p); //输出航班信息
}//if
}//if
else{ //按出发地、目的地查找
if (!lstrcmp(p->Departure, szDeparture) && !lstrcmp(p->Destination, szDestination) && !lstrcmp(p->Date, szDate)){//查找到符合航班，输出
if (!flag2){ //若该航班为第一班符合条件的航班
_stprintf(szBuffer, TEXT("航班号\t出发地\t目的地\t起飞时间\t降落时间\t余座\t价格\t折扣\t出发日期\n"));
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
}//if
flag2++;
PrintFlight(hMainDlg, p); //输出航班信息
}//if
}//else
p = p->Next;
}//while
if (!flag2)
MessageBox(hMainDlg, TEXT("对不起，没有符合您要求的航班"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return TRUE;
}//SearchFlight()
//将所查航班信息输出
BOOL PrintFlight(HWND hwndDlg,Flight *p){
TCHAR szBuffer[256];
HWND hEdit = GetDlgItem(hwndDlg, IDC_INFORMATION);
_stprintf(szBuffer, TEXT("\n%s\t%s\t%s\t%s\t%s\t%d\t%.2lf\t%s\t%s\n\n"),
p->Flight_Number, //航班号
p->Departure, //出发地
p->Destination, //目的地
p->TakeOff_Time, //起飞时间
p->Landing_Time, //降落时间
p->Vacant_Seat, //余座
p->Fare, //价格
p->Discount, //折扣
p->Date); //出发日期
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
return TRUE;
}
//订票
BOOL BookTickets(HWND hMainDlg){
int tickets_num;
Flight *p;
TCHAR szFltNum[16], szDate[16];
GetDlgItemText(hMainDlg, IDC_FLIGHTNUM, szFltNum, 15); //获取用户输入航班号
GetDlgItemText(hMainDlg, IDC_DATE, szDate, 15); //获取用户选择航班时间
if (!lstrlen(szFltNum)){
MessageBox(hMainDlg, TEXT("请输入航班号以订票！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
DialogBox(hInst, MAKEINTRESOURCE(IDD_FLTNUM), NULL, (DLGPROC)FlightNumDlgProc); //获取订票数目
if (!lstrlen(szBuffer))
return FALSE;
tickets_num = _ttoi(szBuffer); //订票数目
p = flightlink.head;
while (p){ //查找航班并订票
if (!lstrcmp(p->Flight_Number, szFltNum) && !lstrcmp(p->Date, szDate)) //查找到符合航班
_Book_Tickets(hMainDlg,p,tickets_num);
p = p->Next;
}//while
return TRUE;
}//BookTickets()
//订票
BOOL _Book_Tickets(HWND hwndDlg,Flight *p,int Tickets_Num){
OrderForm *new_order = (OrderForm *)malloc(sizeof(OrderForm));
if (!new_order){
MessageBox(hwndDlg, TEXT("内存申请错误!"), TEXT("错误"), MB_OK | MB_ICONERROR);
return FALSE;
}
if (Tickets_Num > p->Vacant_Seat){ //余票不足，给出建议航班
Recommend(hwndDlg,p,Tickets_Num);
return FALSE;
}
new_order->Order_Number = ++allorder.AllOrderNum; //新订单信息，总订单数+1
new_order->Tickets_Num = Tickets_Num;
lstrcpy(new_order->IdNum, passenger->IdNum);
lstrcpy(new_order->Flight_Number, p->Flight_Number);
lstrcpy(new_order->Departure, p->Departure);
lstrcpy(new_order->Destination, p->Destination);
lstrcpy(new_order->Date, p->Date);
lstrcpy(new_order->TakeOff_Time, p->TakeOff_Time);
lstrcpy(new_order->Landing_Time, p->Landing_Time);
new_order->Next = NULL;
new_order->psgNext = NULL;
if (allorder.head == NULL) //将结点添至订单链表末尾
allorder.head = new_order;
else
allorder.tail->Next = new_order;
allorder.tail = new_order;
if (passenger->OrderLink.head == NULL) //将结点添至用户订单链表末尾
passenger->OrderLink.head = new_order;
else
passenger->OrderLink.tail->psgNext = new_order;
passenger->OrderLink.tail = new_order;
passenger->OrderLink.OrderNum++;
passenger->TicketNum += Tickets_Num;
p->Vacant_Seat -= Tickets_Num; //航班余票-1
MessageBox(hwndDlg, TEXT("订票成功！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return TRUE;
}//_Book_Tickets()
//给出建议航班
BOOL Recommend(HWND hwndDlg, Flight *p,int Tickets_Num){
SetDlgItemText(hwndDlg, IDC_INFORMATION, TEXT("\0")); //清空航班信息栏
int flag = 0;
TCHAR szBuffer[256] = {TEXT("\0")};
HWND hEdit = GetDlgItem(hwndDlg, IDC_INFORMATION);
Flight *q;
q = flightlink.head;
while (q){
if (!(lstrcmp(p->Departure, q->Departure)) &&
!(lstrcmp(p->Destination, q->Destination)) &&
lstrcmp(p->Flight_Number, q->Flight_Number) &&
Tickets_Num<=q->Vacant_Seat)
{
if (!flag){
wsprintf(szBuffer, TEXT("您所订航班余票不足，以下为建议航班:\n"));
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
wsprintf(szBuffer, TEXT("\n"));
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
wsprintf(szBuffer, TEXT("航班号\t出发地\t目的地\t起飞时间\t降落时间\t余座\t价格\t折扣\t出发日期\n"));
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
++flag;
}//if
PrintFlight(hwndDlg, q);
}//if
q = q->Next;
}//while
if (!flag){
wsprintf(szBuffer, TEXT("对不起，您所订航班余票不足，当天也其它没有符合条件的航班...\n"));
SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(szBuffer));
}
return TRUE;
}//Recommend()
//退票
BOOL ReturnTickets(HWND hwndDlg){
int flag = 0;
int num=0,tickets_num;
Flight *flight;
OrderForm *p,*q,*s,*prePoint;
TCHAR szFltNum[16], szDate[16];
GetDlgItemText(hwndDlg, IDC_FLIGHTNUM, szFltNum, 15); //获取用户输入航班号
GetDlgItemText(hwndDlg, IDC_DATE, szDate, 15); //获取用户选择航班时间
if (!lstrlen(szFltNum)){ //未输入航班号
MessageBox(hwndDlg, TEXT("请输入航班号！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
DialogBox(hInst, MAKEINTRESOURCE(IDD_FLTNUM), NULL, (DLGPROC)FlightNumDlgProc); //获取退票数目
if (!lstrlen(szBuffer))
return FALSE;
tickets_num = _ttoi(szBuffer); //退票数
p = passenger->OrderLink.head;
prePoint = p;
if (!p){ //用户无订单
MessageBox(hwndDlg, TEXT("当前用户没有已订票"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
while (p){ //退票航班订票总数
if (!lstrcmp(p->Flight_Number, szFltNum) && !lstrcmp(p->Date, szDate))
num += p->Tickets_Num;
p = p->psgNext;
}
if (tickets_num > num){ //退票数大于该航班已订票数
wsprintf(szBuffer, TEXT("对不起，该航班您只订了%d张机票，请重新填写退票张数"), num);
MessageBox(hwndDlg, szBuffer, TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}//if
p = passenger->OrderLink.head;
while (p){ //退票
if (!lstrcmp(p->Flight_Number, szFltNum) && !lstrcmp(p->Date, szDate) ){
if (tickets_num >= p->Tickets_Num){ //当退票数大于等于当前订单内票数
s = p->psgNext;
passenger->TicketNum -= p->Tickets_Num; //用户订票数减少
allorder.AllOrderNum--; //总订单数减少
passenger->OrderLink.OrderNum--; //用户订单数减少
tickets_num -= p->Tickets_Num; //需要退票数减少 若需要退票数为0，则退出，否则继续循环
if (passenger->OrderLink.head == p){ //若p为头结点，删除头结点
passenger->OrderLink.head = p->psgNext; //头指针指向下一个结点
if (!p->psgNext) //若p同时为尾结点，则尾指针指向NULL
passenger->OrderLink.tail = NULL;
}
else if (!p->psgNext) //若p非头结点但为尾结点，尾指针指向前一个结点
passenger->OrderLink.tail = prePoint;
prePoint->psgNext = p->psgNext; //链表删除结点p
flight = flightlink.head;
while (flight){ //航班余座增加
if (!lstrcmp(flight->Flight_Number, szFltNum) && !lstrcmp(flight->Date, szDate)){
flight->Vacant_Seat += p->Tickets_Num;
break;
}
flight = flight->Next;
}//while
q = allorder.head;
prePoint = q;
while (q){ //删除订单链表中订单结点
if (q == p){ //找到订单结点
if (allorder.head == p){ //若p为头结点，删除头结点
allorder.head = p->Next; //头指针指向下一个结点
if (!q->Next) //若q同时为尾结点，则尾指针指向NULL
allorder.tail = NULL;
}
else if (!q->Next) //若q非头结点但为尾结点，尾指针指向前一个结点
allorder.tail = prePoint;
prePoint->Next = q->Next; //链表删除结点q
free(p); break; //释放p结点内存
}//if
prePoint = q;
q = q->Next;
}//while
if (tickets_num){ //若退票数非0，则继续退票
p = s; continue;
}
MessageBox(hwndDlg, TEXT("退票成功！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return TRUE;
}//if
else{ //退票数小于该订单订票数
p->Tickets_Num -= tickets_num; //订单订票数减少
passenger->TicketNum -= tickets_num; //用户订票数减少
flight = flightlink.head;
while (flight){
if (!lstrcmp(flight->Flight_Number, szFltNum) && !lstrcmp(flight->Date, szDate)){
flight->Vacant_Seat += tickets_num; //航班余票增加
break;
}
flight = flight->Next;
}//while
MessageBox(hwndDlg, TEXT("退票成功！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return TRUE; //退票成功
}//else
}//if
prePoint = p;
p = p->psgNext;
}//while
wsprintf(szBuffer, TEXT("对不起，您没有订该航班机票，请确认退票航班"));
MessageBox(hwndDlg, szBuffer, TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}//ReturnTickets()
点击订票或退票按钮时，会弹出一个对话框来让用户输入订票或退票数目，对话框窗口过程如下：
//获取用户输入机票数量_窗口过程
BOOL CALLBACK FlightNumDlgProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){
switch (uMsg)
{
case WM_INITDIALOG:
{
if (hIcon)
SendMessage(hwndDlg, WM_SETICON, ICON_SMALL, (LPARAM)hIcon);
}//WM_INITDIALOG
return TRUE;
case WM_CLOSE:
{
wsprintf(szBuffer, TEXT("\0"));
EndDialog(hwndDlg, FALSE);
}//WM_CLOSE
return TRUE;
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case IDOK:
wsprintf(szBuffer, TEXT("\0"));
GetDlgItemText(hwndDlg, IDC_TICKETNUM, szBuffer, 256);
EndDialog(hwndDlg, TRUE);
break;
}//switch
}//WM_COMMAND
return TRUE;
}//switch
return FALSE;
}
接下来是航班录入和修改航班信息功能的实现，分别对应一个对话框，窗口过程分别如下:
//录入航班_窗口过程
BOOL CALLBACK EntryFlightProc(HWND hEntryDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){
switch (uMsg)
{
case WM_INITDIALOG:
{
if (hIcon)
SendMessage(hEntryDlg, WM_SETICON, ICON_SMALL, (LPARAM)hIcon);
}
return TRUE;
case WM_CLOSE:
{
EndDialog(hEntryDlg, 0);
}//WM_CLOSE
return TRUE;
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case IDC_ADDFLT:
{
EntryFlight(hEntryDlg); //录入航班
break;
}//GETNAME
case IDC_QUIT:
{
EndDialog(hEntryDlg, FALSE);
break;
}//GETNAMECANCEL
}//stitch
}//WM_COMMAND
return TRUE;
}//stitch
return FALSE;
}
//修改航班信息_窗口过程
BOOL CALLBACK ModifyFlightProc(HWND hModifyDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){
switch (uMsg)
{
case WM_INITDIALOG:
{
if (hIcon)
SendMessage(hModifyDlg, WM_SETICON, ICON_SMALL, (LPARAM)hIcon);
}
return TRUE;
case WM_CLOSE:
{
EndDialog(hModifyDlg, 0);
}//WM_CLOSE
return TRUE;
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case IDC_MODIFY:
{
ModifyFlight(hModifyDlg); //修改航班信息
break;
}//GETNAME
case IDC_QUIT:
{
EndDialog(hModifyDlg, FALSE);
break;
}//GETNAMECANCEL
}//stitch
}//WM_COMMAND
return TRUE;
}//stitch
return FALSE;
}//ModifyFlightProc()
具体功能实现代码：
//录入航班
BOOL EntryFlight(HWND hEntryDlg){
TCHAR szDiscount[16];
TCHAR szFare[16],szSeat_Number[16];
TCHAR szFlight_Number[16], szDate[16];
TCHAR szDeparture[16], szDestination[16];
TCHAR szTakeOff_Time[16], szLanding_Time[16];
Flight *p = (Flight *)malloc(sizeof(Flight)),*q;
if (!p){
MessageBox(hEntryDlg, TEXT("内存申请错误!"), TEXT("错误"), MB_OK | MB_ICONERROR);
return FALSE;
}
GetDlgItemText(hEntryDlg, IDC_DEPARTURE, szDeparture, 16); //获取录入航班信息
GetDlgItemText(hEntryDlg, IDC_DESTINATION, szDestination, 16);
GetDlgItemText(hEntryDlg, IDC_FLTNUM, szFlight_Number, 16);
GetDlgItemText(hEntryDlg, IDC_FARE, szFare, 16);
GetDlgItemText(hEntryDlg, IDC_TAKEOFFTIME, szTakeOff_Time, 16);
GetDlgItemText(hEntryDlg, IDC_LANDINGTIME, szLanding_Time, 16);
GetDlgItemText(hEntryDlg, IDC_SEATNUM, szSeat_Number, 16);
GetDlgItemText(hEntryDlg, IDC_DISCOUNT, szDiscount, 16);
GetDlgItemText(hEntryDlg, IDC_DATE, szDate, 16);
if (!lstrlen(szDeparture) || !lstrlen(szDestination) ||
!lstrlen(szFlight_Number) || !lstrlen(szFare) ||
!lstrlen(szTakeOff_Time) || !lstrlen(szLanding_Time) ||
!lstrlen(szSeat_Number))
{
MessageBox(hEntryDlg, TEXT("请您填写完整航班信息！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
q = flightlink.head;
while (q){
if (!lstrcmp(q->Flight_Number, szFlight_Number) && !lstrcmp(q->Date,szDate)){
MessageBox(hEntryDlg, TEXT("对不起，同一航班在一天内只能有一班"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
free(p);
return FALSE;
}
q = q->Next;
}//while
lstrcpy(p->Date, szDate); //填入录入航班结点信息
lstrcpy(p->Discount, szDiscount);
lstrcpy(p->Departure, szDeparture);
lstrcpy(p->Destination, szDestination);
lstrcpy(p->TakeOff_Time, szTakeOff_Time);
lstrcpy(p->Landing_Time, szLanding_Time);
lstrcpy(p->Flight_Number, szFlight_Number);
p->Fare = _ttof(szFare);
p->Seat_Number = _ttoi(szSeat_Number);
p->Vacant_Seat = p->Seat_Number;
p->Next = NULL;
if (flightlink.head == NULL) //将新结点添至航班链表
flightlink.head = p;
else
flightlink.tail->Next = p;
flightlink.tail = p;
flightlink.Flight_Number++; //航班数目增加
MessageBox(hEntryDlg, TEXT("航班录入成功！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return TRUE;
}//EntryFlight()
//修改航班信息
BOOL ModifyFlight(HWND hModifyDlg){
int seat_num;
TCHAR szDiscount[16];
TCHAR szFare[16], szSeat_Number[16];
TCHAR szTakeOff_Time[16], szLanding_Time[16];
TCHAR Mdf_flt_num[16], Mdf_flt_date[16];
OrderForm *q;
Flight *p;
GetDlgItemText(hModifyDlg, IDC_MDFFLTNUM, Mdf_flt_num, 16); //获取要修改的航班
GetDlgItemText(hModifyDlg, IDC_MDFDATE, Mdf_flt_date, 16);
if (!lstrlen(Mdf_flt_num)){
MessageBox(hModifyDlg, TEXT("请输入所要修改信息的航班号"), TEXT("信息"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
GetDlgItemText(hModifyDlg, IDC_FARE, szFare, 16); //获取要修改的信息
GetDlgItemText(hModifyDlg, IDC_DISCOUNT, szDiscount, 16);
GetDlgItemText(hModifyDlg, IDC_SEATNUM, szSeat_Number, 16);
GetDlgItemText(hModifyDlg, IDC_TAKEOFFTIME, szTakeOff_Time, 16);
GetDlgItemText(hModifyDlg, IDC_LANDINGTIME, szLanding_Time, 16);
p = flightlink.head;
while (p){ //查找要修改的航班
if (!lstrcmp(Mdf_flt_num, p->Flight_Number) && !lstrcmp(Mdf_flt_date, p->Date)){
if (lstrlen(szFare)) //改变航班票价
p->Fare = _ttof(szFare);
if (lstrlen(szDiscount)) //改变航班折扣
wsprintf(p->Discount, szDiscount);
if (lstrlen(szSeat_Number)){
seat_num = _ttoi(szSeat_Number);
if ((p->Seat_Number - seat_num) > p->Vacant_Seat){ //余座数量>=0
MessageBox(hModifyDlg, TEXT("对不起，座位数过少，请重新填写"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}
p->Vacant_Seat -= p->Seat_Number - seat_num; //改变余票数量
p->Seat_Number = seat_num; //改变座位数
}//if
if (lstrlen(szTakeOff_Time)){ //改变航班起飞时间
wsprintf(p->TakeOff_Time, szTakeOff_Time);
q = allorder.head; //改变该航班所有订单出发时间
while (q){
if (!lstrcmp(q->Flight_Number, p->Flight_Number) && !lstrcmp(q->Date, p->Date))
wsprintf(q->TakeOff_Time, szTakeOff_Time);
q = q->Next;
}
}//if
if (lstrlen(szLanding_Time)){ //改变航班降落时间
wsprintf(p->Landing_Time, szLanding_Time);
q = allorder.head; //改变该航班所有订单降落时间
while (q) {
if (!lstrcmp(q->Flight_Number, p->Flight_Number) && !lstrcmp(q->Date, p->Date))
wsprintf(q->Landing_Time, szLanding_Time);
q = q->Next;
}
}//if
MessageBox(hModifyDlg, TEXT("修改成功！"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return TRUE;
}//if
p = p->Next;
}//while
MessageBox(hModifyDlg, TEXT("对不起，您所要修改的航班尚未录入。"), TEXT("提示"), MB_OK | MB_ICONINFORMATION);
return FALSE;
}//ModifyFlight()
至此，订票系统的功能已经基本全部实现了，剩下的问题就是在程序退出时将账户、航班、订单数据写进文件里。
具体实现起来很简单，代码如下：
//保存账户资料
BOOL WriteAccountData(HWND hMainDlg){
Passenger *p;
FILE *fp;
if ((fp = fopen(".\\AccountData.txt", "w")) == NULL){
MessageBox(hMainDlg, TEXT("账户信息保存出现错误!"), TEXT("错误"), MB_OK | MB_ICONERROR);
return FALSE;
}
p = psglink.head;
while (p){
fprintf(fp, "%s\n%s\n%s\n", p->Name, p->IdNum, p->PassWord);
p = p->Next;
}//while
fclose(fp);
return TRUE;
}//WriteAccountData
//保存订单信息
BOOL WriteOrderData(HWND hMainDlg){
OrderForm *p;
FILE *fp;
if ((fp = fopen(".\\OrderForm.txt", "w")) == NULL){
MessageBox(hMainDlg, TEXT("订单信息保存出现错误!"), TEXT("错误"), MB_OK | MB_ICONERROR);
return FALSE;
}
p = allorder.head;
while (p){
fprintf(fp, "%s\n", p->IdNum);
fprintf(fp, "%d\n", p->Order_Number);
fprintf(fp, "%d\n", p->Tickets_Num);
fprintf(fp, "%s\n", p->Flight_Number);
fprintf(fp, "%s\n", p->Departure);
fprintf(fp, "%s\n", p->Destination);
fprintf(fp, "%s\n", p->Date);
fprintf(fp, "%s\n", p->TakeOff_Time);
fprintf(fp, "%s\n", p->Landing_Time);
p = p->Next;
}//while
fclose(fp);
return TRUE;
}//WriteOrderData()
//保存航班信息
BOOL WriteFlightData(HWND hMainDlg){
Flight *p;
FILE *fp;
if ((fp = fopen(".\\FlightData.txt", "w")) == NULL){
MessageBox(hMainDlg, TEXT("航班信息保存出现错误!"), TEXT("错误"), MB_OK | MB_ICONERROR);
return FALSE;
}
p = flightlink.head;
while (p){
fprintf(fp, "%s\n", p->Flight_Number);
fprintf(fp, "%.2lf\n", p->Fare);
fprintf(fp, "%s\n", p->Discount);
fprintf(fp, "%d\n%d\n", p->Seat_Number, p->Vacant_Seat);
fprintf(fp, "%s\n", p->Departure);
fprintf(fp, "%s\n", p->Destination);
fprintf(fp, "%s\n", p->Date);
fprintf(fp, "%s\n", p->TakeOff_Time);
fprintf(fp, "%s\n", p->Landing_Time);
p = p->Next;
}//while
fclose(fp);
return TRUE;
}//WriteFlight()
至此，我的处女作就算是完成了，其中还是有很多不足之处。查找算法只是简单的遍历链表，数据结构也只是采用了单链表，倒是订单用上了十字链表来存储。查找起来效率不高，一旦数据量变大，便会很耗费时间，不过考虑到这只是一个课程设计，数据量很小，查找起来时间耗费上没有多少差别，姑且就这样吧。
