C++ 食堂管理系统

2024 年 8 月 28 日 | 阅读 17 分钟

这个用C++编写的食堂管理系统项目包括客户和产品搜索、显示、更改和删除等功能。该程序在允许用户提交订单之前，会先搜索文件中保存的客户信息。该软件专为需要跟踪数据且顾客和商品数量有限的小型食堂设计。

此外，顾客可以选择暂时购买商品。如果顾客选择是，他们将被允许输入每件商品的价格，并在程序结束时打印所购商品的账单，并从取货中心备份所购商品。管理员现在将专门负责审查最终账单并为新老客户提供更好的帮助。

C++食堂管理系统的功能

客户菜单：在客户菜单中，管理员可以添加客户信息、显示所有客户、搜索记录、编辑记录和删除客户记录。
产品菜单：产品菜单分为五个部分，允许管理员添加新产品、查看所有现有产品、搜索数据库中的记录、编辑产品信息和删除产品。
产品报告生成器：客户输入产品编号，然后输入每件商品的数量，程序将计算包含税费的总价。

程序分解

struct order
{
int prodid1 ;
char pname1 [ 50 ] ;
char compy1 [ 50 ] ;
int qty1 ;
float price1 , dis1 ;
} o1 [ 50 ] ;

以上代码将是食堂管理系统中商品结构，它将包含产品ID、产品名称、产品公司和产品价格。

int orderk = 0 ;
void middleadminmenu ( ) ;
void copyme ( int k , order order1 [ ] , int q1 , int & c2 ) ;
void intromain ( ) ;
int getproduct ( ) ;
int getcustomers ( ) ;
void display_all ( ) ;
void display_all_cust ( ) ;
void prod_tabular ( ) ;
void modify_record ( int n ) ;
void delete_record ( int n ) ;
void againopenandclose ( ) ;
void againopenandclosecust ( ) ;
int search ( int p ) ;
void changeqty ( int pr1 , int q11 ) ;
void gotoxy ( int x , int y )
{
  static HANDLE h = NULL ;
  if ( !h )
    h = GetStdHandle ( STD_OUTPUT_HANDLE ) ;
  COORD c = { x , y } ;
  SetConsoleCursorPosition ( h , c ) ;
}

上述预定义函数将存在于我们的食堂管理系统中，例如修改记录的modify_record将有助于修改系统中的记录，delete_record将允许用户删除系统中的条目等等。

class customer
{
int cust_id ;
char cname [ 25 ] ;
char address [ 35 ] ;
char phno [ 15 ] ;
public :
void modifycust_data ( int n1 , char nm [ 15 ] , char add [ 15 ] , char q [ 15 ] ) ;
int getcustid ( )
{ return cust_id ; }
char * getcustnm ( )
{ return cname ; }
char * getcustadd ( )
{ return address ; }
char * getphno ( ) 
{ return phno ; };

通过选择管理员模块，您可以访问客户菜单，该菜单分为五个选项。第一个选项是创建客户详细信息。第三个：搜索记录（查询），第四个：修改客户记录，第五个：删除客户记录。第二个：显示所有客户详细信息。

void show_cust ( )
{
gotoxy ( 5 , 7 ) ;
 cout < < " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = " ;
 gotoxy ( 10 , 8 ) ;
 cout < < " CUST NO : " ;
 gotoxy ( 25 , 8 ) ;
 cout < < cust_id ;
 gotoxy ( 35 , 8 ) ;
 cout < < " NAME OF CUST : " ;
 gotoxy ( 54 , 8 ) ;
 cout < < cname ;
 gotoxy ( 10 , 9 ) ;
 cout < < " ADDRESS: " ;
 gotoxy ( 25 , 9 ) ;
 cout < < address ;
 gotoxy ( 10 , 10 ) ;
 cout < < " PHONE NO.: " ;
 gotoxy ( 25 , 10 ) ;
 cout < < phno ;
 gotoxy ( 5 , 12 ) ;
 cout < < " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = " ;
}

上述代码将用于显示客户输入的客户详细信息，例如客户姓名、电话号码和地址等条目。

void customer : : modifycust_data ( int n1 , char nm [ 15 ] , char add [ 15 ] , char q [ 15 ] )
{
char tmpnm [ 40 ] , tmpnm2 [ 40 ] , tmpnm3 [ 15 ] ;
gotoxy ( 5 , 14 ) ;
 cout < < " = = = = = = = = = = = = = = = WANT TO MODIFY = = = = = = = = = = = = = = " ;
 gotoxy ( 10 , 15 ) ;
 cout < < " CUST NO : " ;
 cust_id = n1 ;
 gotoxy ( 25 , 15 ) ;
 cout < < cust_id ;
 gotoxy ( 40 , 15 ) ;
 strcpy ( cname , nm ) ;
 cout < < " NAME OF CUST : " ;
 gotoxy ( 60 , 15 ) ;
 cout < < cname ;
 gotoxy ( 10 , 17 ) ;
 cout < < " Want to change the name of customer " ;
 gotoxy ( 50 , 17 ) ;
 int flag = 0 ;
 while ( 1 )
 {
 gets ( tmpnm ) ;
 if ( strlen ( tmpnm ) != 0 )
 {
flag = 1 ;
break ;
}
 if ( strlen ( tmpnm ) == 0 )
 { flag = 0 ;
 break ;
}
 }
 if ( flag == 1 )
 { strcpy ( cname , tmpnm ) ;
 }
 else
 {
 }
 gotoxy ( 1 , 18 ) ;
 strcpy ( address , add ) ;
 // * * * * * * * * * * * * NAME TO BE MODIFY
 cout < < " CUSTOMER ADDRESS : " ;
 gotoxy ( 20 , 18 ) ;
 cout < < address ;
 gotoxy ( 45 , 18 ) ;
 cout < < " Want to change the address " ;
 gotoxy ( 70 , 18 ) ;
 flag = 0 ;
 while ( 1 )
 {
 gets ( tmpnm2 ) ;
 if ( strlen ( tmpnm2 ) != 0 )
 {
flag = 1 ;
break ;
}
 if ( strlen ( tmpnm2 ) == 0 )
 { flag = 0 ;
 break ;
}
 }
 if ( flag == 1 )
 { strcpy ( address , tmpnm2 ) ;
 }
 // * * * * * * * * * * * * * COMPANY NAME TO BE MODIFIED ENDS HERE
 gotoxy ( 5 , 19 ) ;
strcpy ( phno , q ) ;
 // * * * * * * * * * * * * * * * * phone no. TO BE MODIFY
 cout < < " CUSTOMER PHONE NO. : " ;
 gotoxy ( 20 , 18 ) ;
 cout < < phno ;
 gotoxy ( 45 , 18 ) ;
 cout < < " Want to change the phone no. " ;
 gotoxy ( 70 , 18 ) ;
 flag = 0 ;
 while ( 1 )
 {
 gets ( tmpnm3 ) ;
 if ( strlen ( tmpnm3 ) != 0 )
 {
flag = 1 ;
break ;
}
 if ( strlen ( tmpnm3 ) == 0 )
 { flag = 0 ;
 break ;
}
 }
 if ( flag == 1 )
 { strcpy ( phno , tmpnm3 ) ;
 }
 // * * * * * * * * * * * * * * * * * MODIFIED ENDS HERE
gotoxy ( 5 , 20 ) ;
 cout < < " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = " ;
}

客户还可以编辑他们之前输入的数据，例如客户姓名、电话号码和客户地址，上述代码将有助于实现这一点。

 void cust_tabular ( )
{
 int r = 0 , col = 10 ;
customer cust ;
ifstream inFile ;
inFile.open ( " customer.dat " , ios::binary ) ;
if ( !inFile )
{
cout < < " File could not be open !! Press any Key... " ;
getch ( ) ;
return ;
}
display_all_cust ( ) ;
while ( inFile.read ( ( char * ) &cust , sizeof ( customer ) ) ) 
{
 if ( r <= 12 )
 {
 r + + ;
 cust.showallcust ( col ) ;
 col + + ;
 }else
 {
 gotoxy ( 20 , 30 ) ;
 cout < < " - - - - - - - - - - - press any key - - - - - - - - - - - - - " ;
 getch ( ) ;
 system ( " cls " ) ;
 display_all_cust ( ) ;
 col = 10 ;
 r = 0 ;
}
}
inFile.close ( ) ;
getch ( ) ;
}

客户数据的更改将通过上述代码以表格形式显示。

void display_all_cust ( )
{
system ( " cls " ) ;
intromain ( ) ;
gotoxy ( 1 , 5 ) ;
cout < < " * * * * * * * * * * * * * * * * * CUSTOMER DETAILS * * * * * * * * * * * * * * * * * * * * * * * " ;
gotoxy ( 1 , 6 ) ;
cout < < " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = " ;
gotoxy ( 1 , 7 ) ;
cout < < " CUST.NO " < < setw ( 10 ) < < " NAME " < < setw ( 15 ) < < " ADDRESS " < < setw ( 30 ) < < " PHONE NO " ;
gotoxy ( 1 , 8 ) ;
cout < < " * * * * * * * * * * * * * * * * * CUSTOMER DETAILS * * * * * * * * * * * * * * * * * * * * * * * " ;
}

系统将显示食堂管理系统中的所有客户，上述代码将有助于打印或显示详细信息。

void modify_cust_record ( int n )
{
customer cust,temp ;
char tmpnm [ 50 ] , tmpaddress [ 50 ] ;
ifstream inFile ;
int fpos1 = -1 ;
inFile.open ( " customer.dat " , ios::binary ) ;
if ( !inFile )
{
cout < < " File could not be open !! Press any Key... " ;
getch ( ) ;
return ;
}
int flag = 0 ;
while ( inFile.read ( ( char * ) & cust , sizeof ( customer ) ) )
{
if ( cust.getcustid ( ) == n )
{ system ( " cls " ) ;
 intromain ( ) ;
 cust.showcustdatamulti ( ) ;
 flag = 1 ;
}
}
inFile.close ( ) ;
if ( flag == 0 )
cout < < " \ n \ n record not exist " ;
else
{
// * * * * * * * modifying the records starts here
fstream File ;
File.open ( " customer.dat " , ios::binary | ios::in | ios::out ) ;
if ( !File )
{
cout < < " File could not be open !! Press any Key... " ;
getch ( ) ;
return ;
}
while ( File.read ( ( char * ) & cust , sizeof ( customer ) ) )
{
if ( cust.getcustid ( ) == n )
{ fpos1 = ( int ) File.tellg ( ) ;
 break ;
}

如果管理员想修改记录文件中的客户记录（如果存在），可以通过上述代码完成，否则系统将提示记录不存在的错误。

void deletecust_record ( int n )
{
 customer cust ;
ifstream inFile ;
inFile.open ( " customer.dat " , ios::binary ) ;
if ( !inFile )
{
cout < < " File could not be open !! Press any Key... " ;
getch ( ) ;
return ;
}
int flag = 0 ;
while ( inFile.read ( ( char * ) & cust , sizeof ( customer ) ) ) 
{
if ( cust.getcustid ( ) == n )
{ system ( " cls " ) ;
 intromain ( ) ;
 cust.showcustdatamulti ( ) ;
 flag = 1 ;
}
}
inFile.close ( ) ;
char ch ;
if ( flag == 0 )
cout < < " \ n \ n record not exist " ;
else
{
// * * * * * * * deletion of the records starts from here
gotoxy ( 1 , 15 ) ;
cout<<" * * * * * * * * * * * * * * * *  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * " ;
gotoxy ( 5 , 16 ) ;
cout < < " = = = = = = DO YOU WANT TO DELETE THE RECORDS GIVEN ABOVE[YES(Y) OR NO (N) = = = = = = = = " ;
gotoxy ( 2 , 17 ) ;
cin > > ch ;
 if ( toupper ( ch ) == ' Y ' )
 {
 ofstream outFile ;
 outFile.open ( " Temp2.dat " , ios::binary ) ;
 ifstream objiff ( " customer.dat " , ios::binary ) ;
 objiff.seekg ( 0 , ios::beg ) ;
 while ( objiff.read ( ( char * ) & cust , sizeof ( customer ) ) )
{
 if ( cust.getcustid ( ) != n )
 {
 outFile.write ( ( char * ) & cust , sizeof ( customer ) ) ;
 }
}
outFile.close ( ) ;
objiff.close ( ) ;
remove ( " customer.dat " ) ;
rename ( " Temp2.dat " , " customer.dat " ) ;
againopenandclosecust ( ) ;
gotoxy ( 30 , 20 ) ;
cout < < " - - - - - - - - - - - - - - - - - - - - - - - - Record Deleted - - - - - -  - - - - - - - - - - - - - - - - " ;
}
}
getch ( ) ;
}
//* * * * * * * * * * * * * * * * * * *  delete record ends * * * * * * * * * * * * * * * * * *

如果管理员想从数据集中删除特定记录，则上述代码将有所帮助。首先，要删除的记录将在记录文件中进行搜索，然后系统将提示消息“您要删除上面给出的记录吗[是(Y)或否(N)]”，然后它将被删除。

int searchcust ( int p )
{
customer cust ;
int tmprt = 0 ;
ifstream inFile ;
inFile.open ( " customer.dat " , ios::binary ) ;
if ( !inFile )
{
cout < < " File could not be open !! Press any Key... " ;
getch ( ) ;
return -1 ;
}
int flag = 0 ;
while ( inFile.read ( ( char * ) & cust , sizeof ( customer ) ) ) 
{
if ( cust.getcustid ( ) == p )
{ system ( " cls " ) ;
 intromain ( ) ;
 cust.showcustdatamulti ( ) ;
 flag = 1 ;
 tmprt = ( int ) inFile.tellg ( ) ;
 break ;
}
}
inFile.close ( ) ;
if ( flag == 0 )
return 1 ;
//cout < < " \ n \ n record not exist " ;
else
{
return tmprt ;
}
}

如果管理员想检查客户记录是否存在于客户的记录文件中，可以通过上述代码完成，如果客户记录不存在于记录文件中，则系统将提示消息“记录不存在”。

class product
{
int prodid ;
char name [ 50 ] ;
char company [ 50 ] ;
int qty ;
float price , dis ;
public :
product ( )
{
qty = 0 ;
price = 0 ;
dis = 0 ;
}

上述类将用于食堂中的产品。产品菜单位于管理员模块中，分为五个选择。创建产品、显示所有可用产品、搜索记录、修改产品和删除产品是前四项操作。

输出

    * * * * * * * * * * * * * * * * CANTEEN-MANAGEMENT* * * * * * * * * * *  * * * * * * 
            = = = = = = = = = = = = = = = = =  = = = = = = = = = = = = = = = = = = = = = = = = 
     * * * * * * * * * * * * * * * * * S = Y = S = T =  E = M * * * * * * * * * * * * * * * * * * 
                                                  PROJECT: 


- - - - - - - - - - - - - - SCHOOL : STATE ENGINEERING UNIVERSITY - - - - - - - - - - - - - - - 
* * * * * CANTEEN * * * * MANAGEMENT * * * * SYSTEM * *  * * PROJECT * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
                    = = = = == = = = = MAIN MENU = = = = = = = = = = = 
                            01. PRODUCTS REPORT GENERATOR
                            02. ADMINISTRATOR
                            03. EXIT
                     = = = = == = = = = = = = = = = = = = = = = = = = = = = = 
                         Please Select Your Option (1-3)
= = = = = = = = = = = = = = = = = ADMIN MENU = = = = = = = = = = = = = = = = = = = = 
                      1.CREATE PRODUCTS
                      2.DISPLAY ALL PRODUCTS AVAILABLE
                      3.SEARCH RECORD(QUERY)
                      4.MODIFY PRODUCTS
                      5.DELETE PRODUCTS
                      6.BACK TO MAIN MENU
                  Please Enter Your Choice (1-6) 1
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
          PROD NO:      2          NAME OF PROD:      Sandwich
          COMPANY:    Smith&Johns  QUANTITY           10

          PROD PRICE     45        DISCOUNT  5
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
   * * * * * * * * * * * * * * * PRODUCTS RECORD SAVED * * * * * * * * * * * * * * *
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
          PROD NO:      65         NAME OF PROD:      Samosa
          COMPANY:    Canteen      QUANTITY           14

          PROD PRICE     10        DISCOUNT  0
  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =     
PROD NO:      1          NAME OF PROD:      Tea
          COMPANY:    Tata         QUANTITY           30

          PROD PRICE     15        DISCOUNT  0
* * * * * * * * * * * * * * * PRODUCTS RECORD SAVED * * * * * * * * * * * * * * *
  **********************PRODUCTS DETAILS***************************
 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
 PROD.NO      NAME        COMPANY          PRICE       QUANTITY  DISCOUNT
  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

 1         Sandwich      Smith       PHP0              0           0%
 2         SandwichSmith&Johns       PHP1.19209e-007           2573-1.08421e-019%
 16704                                   PHP1.0842e-019           35849.10844e-044%
 256                                   PHP1.58456e+029           76809.10844e-044%

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
          PROD NO:       1         NAME OF PROD:      Tea
          COMPANY:       Tata      PROD PRICE:        15
          DISCOUNT:      0%        QUANTITY:          1
  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

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