Question

In: Computer Science

Consider a super market which has different categories of items like grocery, stationary, cosmetics, etc. Under...

Consider a super market which has different categories of items like grocery, stationary, cosmetics, etc. Under each category, the shop holds a maximum capacity of 100 items. The arrangement of items in the racks vary from time to time. Based on the item type and availability, the supplier also varies. Each supplier can supply different items. The system in the supermarket has the complete description of list of all items which includes item number, name, category, supplier name, price, total quantity and qty available. Based on the items purchased by the customer, billing is done.

          From the above description, initially the owner of the shop needs to allocate the rack for the available items randomly and a data structure in the system to hold the descriptions of items. When the owner checks for an item in the stock, it should show all information related to that item(qty available is calculated based on count of type of item purchased by the customer). When the purchased items are entered in the billing section ,it should print item no, item name, qty taken, price and total price of all the items and finally the grand total to be paid .Help the owner of the shop to achieve the above said using an interactive C program which uses appropriate data structures for allocation of space for items, defining the type of items, calculating the total and providing the bill for the customers. The program should be in such a way to handle both the owner and the customer part.[Hint: Use menu driven method and appropriate derived data types like pointers,structures to achieve the result]

Solutions

Expert Solution

ANSWER :

#include<conio.h>

#include<stdio.h>

#include<process.h>

#include<fstream.h>

#include<string.h>


// Global declarations

fstream f;

char*password;

void mainmenu();

int c=1;



// CLASS USED IN PROJECT

class product

{

int pno;

char name[50];

float price,qty,tax,dis;

public:

void create_product()

{

pno=c;

cout<<"\nProduct number is:"<<pno;

getch();c++;

cout<<"\n\nPlease Enter The Name of The Product: ";

gets(name);

cout<<"\nPlease Enter The Price of The Product: ";

cin>>price;

}

void show_product()

{

cout<<"\nThe Product No. of The Product : "<<pno;

cout<<"\nThe Name of The Product : ";

puts(name);

cout<<"\nThe Price of The Product : "<<price;

}

int retpno()

{return pno;}

float retprice()

{return price;}

char* retname()

{return name;}

};

product pr;


// function to write in file

void write_product()

{

f.open("Shop.dat",ios::out|ios::app);

pr.create_product();

f.write((char*)&pr,sizeof(product));

f.close();

cout<<"\n\nThe Product Has Been Created ";

getch();

}

// function to read all records from file

void display_all()

{

clrscr();

cout<<"\n\n\n\t\tDISPLAY ALL RECORD !!!\n\n";

f.open("Shop.dat",ios::in);

while(f.read((char*)&pr,sizeof(product)))

{

pr.show_product();

cout<<"\n\n====================================\n";

getch();

}

f.close();

getch();

}

// function to read specific record from file

void display_sp(int n)

{

int flag=0;

f.open("Shop.dat",ios::in);

while(f.read((char*)&pr,sizeof(product)))

{

if(pr.retpno()==n)

{

clrscr();

pr.show_product();

flag=1;

}

}

f.close();

if(flag==0)

cout<<"\n\nrecord not exist";

getch();

}

// function to modify record of file

void modify_product()

{

int no,found=0;

clrscr();

cout<<"\n\n\tTo Modify ";

cout<<"\n\n\tPlease Enter The Product No. of The Product";

cin>>no;

f.open("Shop.dat",ios::in|ios::out);

while(f.read((char*)&pr,sizeof(product)) && found==0)

{

if(pr.retpno()==no)

{

pr.show_product();

cout<<"\nPlease Enter The New Details of Product"<<endl;

pr.create_product();

int pos=-1*sizeof(pr);

f.seekp(pos,ios::cur);

f.write((char*)&pr,sizeof(product));

cout<<"\n\n\t Record Updated";

found=1;

}

}

f.close();

if(found==0)

cout<<"\n\n Record Not Found ";

getch();

}

// function to delete record of file

void delete_product()

{

int no;

clrscr();

cout<<"\n\n\n\tDelete Record";

cout<<"\n\nPlease Enter The product no. of The Product You Want To Delete";

cin>>no;

f.open("Shop.dat",ios::in|ios::out);

fstream f2;

f2.open("Temp.dat",ios::out);

f.seekg(0,ios::beg);

while(f.read((char*)&pr,sizeof(product)))

{

if(pr.retpno()!=no)

{

f2.write((char*)&pr,sizeof(product));

}

}

f2.close();

f.close();

remove("Shop.dat");

rename("Temp.dat","Shop.dat");

cout<<"\n\n\tRecord Deleted ..";

getch();

}

// function to display all products price list

void menu()

{

clrscr();

f.open("Shop.dat",ios::in);

if(!f)

{

cout<<"ERROR!!! FILE COULD NOT BE OPEN\n\n\n Go To Admin Menu to create file";

cout<<"\n\n\n Program is closing ....";

getch();

exit(0);

}

cout<<"\n\n\t\tProduct MENU\n\n";

cout<<"====================================================\n";

cout<<"P.NO.\t\tNAME\t\tPRICE\n";

cout<<"====================================================\n";

while(f.read((char*)&pr,sizeof(product)))

{

cout<<pr.retpno()<<"\t\t"<<pr.retname()<<"\t\t"<<pr.retprice()<<endl;

}

f.close();

}

// function to place order and generating bill for Products

void place_order()

{

int order_arr[50],quan[50],c=0;

float amt,damt,total=0;

char ch='Y';

menu();

cout<<"\n============================";

cout<<"\n PLACE YOUR ORDER";

cout<<"\n============================\n";

do

{

cout<<"\n\nEnter The Product No. Of The Product : ";

cin>>order_arr[c];

cout<<"\nQuantity in number : ";

cin>>quan[c];

c++;

cout<<"\nDo You Want To Order Another Product ? (y/n)";

cin>>ch;

}while(ch=='y' ||ch=='Y');

cout<<"\n\nThank You For Placing The Order";getch();clrscr();

cout<<"\n\n********************************INVOICE************************\n";

cout<<"\nPr No.\tPr Name\tQuantity \tPrice \tAmount \tAmount after discount\n";

for(int x=0;x<=c;x++)

{

f.open("Shop.dat",ios::in);

f.read((char*)&pr,sizeof(product));

while(!f.eof())

{

if(pr.retpno()==order_arr[x])

{

amt=pr.retprice()*quan[x];

damt=amt-(amt*pr.retdis()/100);

cout<<"\n"<<order_arr[x]<<"\t"<<pr.retname()

<<"\t"<<quan[x]<<"\t\t"<<pr.retprice()<<"\t"<<amt<<"\t\t"<<damt;

total+=damt;

}

f.read((char*)&pr,sizeof(product));

}

f.close();

}

cout<<"\n\n\t\t\t\t\tTOTAL = "<<total;

getch();

}

// INTRODUCTION FUNCTION

void intro()

{

clrscr();

gotoxy(16,10);

cout<<"******WELCOME TO SUPER MARKET******";

gotoxy(25,15);

getch();

}

// ADMIN MENU FUNCTION

void admin_menu()

{

clrscr();

char ch2;

do{ clrscr();

cout<<"\n\n\n\tADMIN MENU";

cout<<"\n\n\t1.CREATE PRODUCT";

cout<<"\n\n\t2.DISPLAY ALL PRODUCTS";

cout<<"\n\n\t3.QUERY ";

cout<<"\n\n\t4.MODIFY PRODUCT";

cout<<"\n\n\t5.DELETE PRODUCT";

cout<<"\n\n\t6.VIEW PRODUCT MENU";

cout<<"\n\n\t7.BACK TO MAIN MENU";

cout<<"\n\n\tPlease Enter Your Choice (1-7) ";

cin>>ch2;

switch(ch2)

{

case '1': clrscr();

write_product();

break;

case '2': display_all();break;

case '3':

int num;

clrscr();

cout<<"\n\n\tPlease Enter The Product No. ";

cin>>num;

display_sp(num);

break;

case '4': modify_product();break;

case '5': delete_product();break;

case '6': menu();getch();break;

case '7': mainmenu();

default:cout<<"\a";admin_menu();

}

}while(ch2!=7);

}

void mainmenu()

{char ch;

do

{

clrscr();

cout<<"\n\n\n\tMAIN MENU";

cout<<"\n\n\t01. CUSTOMER";

cout<<"\n\n\t02. ADMINISTRATOR";

cout<<"\n\n\t03. EXIT";

cout<<"\n\n\tPlease Select Your Option (1-3) ";

cin>>ch;

switch(ch)

{

case '1':

clrscr();

place_order();

getch();

break;

case '2':

for(int i=1;i<4;i++)

{

cout<<"\n\n\nEnter ADMIN password: ";

gets(password);

if(strcmp("supermarket",password)==0)

{ i=4 ;

admin_menu();}

else

cout<<"\nIncorrect password!!! "<<3-i<<" tries remaining";

}

break;

case '3':exit(0);

default :cout<<"\a";

}

}while(ch!='3');

}

// THE MAIN FUNCTION OF PROGRAM

void main()

{

intro();

mainmenu();

}

#include<conio.h>
#include<stdio.h>
#include<process.h>
#include<fstream.h>
#include<string.h>



// Global declarations

fstream f;

char*password;
void mainmenu();
int c=1;




// CLASS USED IN PROJECT

class product
{
        int pno;
        char name[50];
        float price,qty,tax,dis;
        public:
        void create_product()
        {
         pno=c;
         cout<<"\nProduct number is:"<<pno;
         getch();c++;
         cout<<"\n\nPlease Enter The Name of The Product: ";
         gets(name);
         cout<<"\nPlease Enter The Price of The Product: ";
         cin>>price;

        }
        void show_product()
        {
        cout<<"\nThe Product No. of The Product : "<<pno;
        cout<<"\nThe Name of The Product : ";
        puts(name);
        cout<<"\nThe Price of The Product : "<<price;
        }
        int retpno()
        {return pno;}
        float retprice()
        {return price;}
        char* retname()
        {return name;}
        
}; 

product pr;



// function to write in file

void write_product()
{

        f.open("Shop.dat",ios::out|ios::app);
        pr.create_product();
        f.write((char*)&pr,sizeof(product));
        f.close();
        cout<<"\n\nThe Product Has Been Created ";
        getch();
}


// function to read all records from file

void display_all()
{
        clrscr();
        cout<<"\n\n\n\t\tDISPLAY ALL RECORD !!!\n\n";
        f.open("Shop.dat",ios::in);
        while(f.read((char*)&pr,sizeof(product)))
        {
                pr.show_product();
                cout<<"\n\n====================================\n";
                getch();
        }
        f.close();
        getch();
}


// function to read specific record from file

void display_sp(int n)
{
        int flag=0;
        f.open("Shop.dat",ios::in);
        while(f.read((char*)&pr,sizeof(product)))
        {
                if(pr.retpno()==n)
                {
                        clrscr();
                        pr.show_product();
                        flag=1;
                }
        }
        f.close();
        if(flag==0)
        cout<<"\n\nrecord not exist";
        getch();
}


// function to modify record of file


void modify_product()
{
        int no,found=0;
        clrscr();
        cout<<"\n\n\tTo Modify ";
        cout<<"\n\n\tPlease Enter The Product No. of The Product";
        cin>>no;
        f.open("Shop.dat",ios::in|ios::out);
        while(f.read((char*)&pr,sizeof(product)) && found==0)
        {
                if(pr.retpno()==no)
                {
                        pr.show_product();
                        cout<<"\nPlease Enter The New Details of Product"<<endl;
                        pr.create_product();
                        int pos=-1*sizeof(pr);
                        f.seekp(pos,ios::cur);
                        f.write((char*)&pr,sizeof(product));
                        cout<<"\n\n\t Record Updated";
                        found=1;
                }
        }
        f.close();

        if(found==0)
        cout<<"\n\n Record Not Found ";
        getch();
}


// function to delete record of file

void delete_product()
{
        int no;
        clrscr();
        cout<<"\n\n\n\tDelete Record";
        cout<<"\n\nPlease Enter The product no. of The Product You Want To Delete";
        cin>>no;
        f.open("Shop.dat",ios::in|ios::out);
        fstream f2;
        f2.open("Temp.dat",ios::out);
        f.seekg(0,ios::beg);
        while(f.read((char*)&pr,sizeof(product)))
        {
                if(pr.retpno()!=no)
                {
                        f2.write((char*)&pr,sizeof(product));
                }
        }
        f2.close();
        f.close();
        remove("Shop.dat");
        rename("Temp.dat","Shop.dat");
        cout<<"\n\n\tRecord Deleted ..";
        getch();
}


// function to display all products price list

void menu()
{
        clrscr();
        f.open("Shop.dat",ios::in);
        if(!f)
        {
                cout<<"ERROR!!! FILE COULD NOT BE OPEN\n\n\n Go To Admin Menu to create file";

                cout<<"\n\n\n Program is closing ....";
                getch();
                exit(0);
        }
        cout<<"\n\n\t\tProduct MENU\n\n";
        cout<<"====================================================\n";
        cout<<"P.NO.\t\tNAME\t\tPRICE\n";
        cout<<"====================================================\n";
        while(f.read((char*)&pr,sizeof(product)))
        {
                cout<<pr.retpno()<<"\t\t"<<pr.retname()<<"\t\t"<<pr.retprice()<<endl;
        }
        f.close();
}
 

// function to place order and generating bill for Products


void place_order()
{
        int order_arr[50],quan[50],c=0;
        float amt,damt,total=0;
        char ch='Y';
        menu();
        cout<<"\n============================";
        cout<<"\n PLACE YOUR ORDER";
        cout<<"\n============================\n";
        do
        {
                cout<<"\n\nEnter The Product No. Of The Product : ";
                cin>>order_arr[c];
                cout<<"\nQuantity in number : ";
                cin>>quan[c];
                c++;
                cout<<"\nDo You Want To Order Another Product ? (y/n)";
                cin>>ch;
        }while(ch=='y' ||ch=='Y');
        cout<<"\n\nThank You For Placing The Order";getch();clrscr();
        cout<<"\n\n********************************INVOICE************************\n";
        cout<<"\nPr No.\tPr Name\tQuantity \tPrice \tAmount \tAmount after discount\n";
        for(int x=0;x<=c;x++)
        {
                f.open("Shop.dat",ios::in);
                f.read((char*)&pr,sizeof(product));
                while(!f.eof())
                {
                        if(pr.retpno()==order_arr[x])
                        {
                                amt=pr.retprice()*quan[x];
                                damt=amt-(amt*pr.retdis()/100);
                                cout<<"\n"<<order_arr[x]<<"\t"<<pr.retname()
                                <<"\t"<<quan[x]<<"\t\t"<<pr.retprice()<<"\t"<<amt<<"\t\t"<<damt;
                                total+=damt;
                        }
                        f.read((char*)&pr,sizeof(product));
                }
                f.close();
        }
        cout<<"\n\n\t\t\t\t\tTOTAL = "<<total;
        getch();
}


// INTRODUCTION FUNCTION

void intro()
{
        clrscr();
        gotoxy(16,10);
        cout<<"******WELCOME TO SUPER MARKET******";

        gotoxy(25,15);
        getch();
}
 

// ADMIN MENU FUNCTION

void admin_menu()
{
        clrscr();
        char ch2;
        do{     clrscr();
                cout<<"\n\n\n\tADMIN MENU";
                cout<<"\n\n\t1.CREATE PRODUCT";
                cout<<"\n\n\t2.DISPLAY ALL PRODUCTS";
                cout<<"\n\n\t3.QUERY ";
                cout<<"\n\n\t4.MODIFY PRODUCT";
                cout<<"\n\n\t5.DELETE PRODUCT";
                cout<<"\n\n\t6.VIEW PRODUCT MENU";
                cout<<"\n\n\t7.BACK TO MAIN MENU";
                cout<<"\n\n\tPlease Enter Your Choice (1-7) ";
                cin>>ch2;
                switch(ch2)
                {
                        case '1': clrscr();
                        write_product();
                        break;
                        case '2': display_all();break;
                        case '3':
                        int num;
                        clrscr();
                        cout<<"\n\n\tPlease Enter The Product No. ";
                        cin>>num;
                        display_sp(num);
                        break;
                        case '4': modify_product();break;
                        case '5': delete_product();break;
                        case '6': menu();getch();break;

                        case '7': mainmenu();
                        default:cout<<"\a";admin_menu();
                }
        }while(ch2!=7);
}


void mainmenu()
{char ch;
 do
 {
        clrscr();
        cout<<"\n\n\n\tMAIN MENU";
        cout<<"\n\n\t01. CUSTOMER";
        cout<<"\n\n\t02. ADMINISTRATOR";
        cout<<"\n\n\t03. EXIT";
        cout<<"\n\n\tPlease Select Your Option (1-3) ";
        cin>>ch;
        switch(ch)
        {
                case '1':
                clrscr();
                place_order();
                getch();
                break;

                case '2':
                for(int i=1;i<4;i++)
                {
                        cout<<"\n\n\nEnter ADMIN password: ";
                        gets(password);

                        if(strcmp("supermarket",password)==0)
                        {       i=4 ;
                                admin_menu();}
                                else
                                cout<<"\nIncorrect password!!! "<<3-i<<" tries remaining";
                        }
                        break;

                case '3':exit(0);

                default :cout<<"\a";

                }
}while(ch!='3');
}


// THE MAIN FUNCTION OF PROGRAM

void main()
{

        intro();
        mainmenu();

}

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venereology answered 4 months ago
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