C++ PROJECT WITH DFH | PRODUCT MANAGEMENT SYSTEM - Working Code

/*Specially for the students of Class-12 of CBSE. It is a complete working code with proper presentation and password security system. 

Just download and go through it. */

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

//Function Prototyping
void line(int=80);//Function to draw line
void adminmenu(); //Function to display operation options for admin user
void guestmenu(); //Function to display operation options for guest user
void adminOps();  //Function with admin menu options
void guestOps();  //Function with guest menu options
void header();   //header to displayed on each page
void login();   //login section admin or guest
void Add();   //Adding data to binary file
void Display();   //Reading binary file
void Search();   //Searching in binary file
void Delete();   //Deleting record in binary file
void Modify();   //Modify product in binary file
void ViewTrash(); //Deleted data in binary file
void intro();   //First page of the project.
void login();   //Function for admin or guest login option
void usermenu();  //Function to display user options
void admin();     //Function to display admin options
void conclude();  //Function to display conclude message.

class Product
{
int pid;
char pname[20];
char category[20];
int qty;
float rate;
float amount;

public:
int getID(){return pid;}
float getAmount(){return amount;}
void getData();
void showData();
void listView();
void heading();
}p;

void Product::getData()
{
cout<<"ENTER PRODUCT DETAILS\n";
line(50);
cout<<"Product ID: "; cin>>pid;
cout<<"Name      : "; cin.ignore(); cin.getline(pname,20);
cout<<"Category  : "; cin.getline(category,20);
cout<<"Qty.      : "; cin>>qty;
cout<<"Rate      : "; cin>>rate;
amount=qty*rate;
line(50);
}

void Product::showData()
{
cout<<"PRODUCT DETAILS\n";
line(50);
cout<<"Product ID: "<<pid<<endl;
cout<<"Name      : "<<pname<<endl;
cout<<"Category  : "<<category<<endl;
cout<<"Qty.      : "<<qty<<endl;
cout<<"Rate      : "<<rate<<endl;
cout<<"Amount    : "<<amount<<endl;
line(50);
}

void Product::heading()
{
cout.setf(ios::left);
cout<<setw(6)<<"ID"
    <<setw(20)<<"Name"
    <<setw(20)<<"Category"
    <<setw(5)<<"Qty"
    <<setw(8)<<"Rate"
    <<setw(11)<<"Amount"
    <<endl;
line(70);
}

void Product::listView()
{
cout.setf(ios::left);
cout<<setw(6)<<pid
    <<setw(20)<<pname
    <<setw(20)<<category
    <<setw(5)<<qty
    <<setw(8)<<rate
    <<setw(11)<<amount
    <<endl;
}

void Add()
{
header();
ofstream fout("prods.bin",ios::out|ios::binary|ios::app);
p.getData();
fout.write((char*)&p,sizeof(p));
fout.close();
cout<<"\nData Saved to File....\n";
}

void Display()
{
int rec=0;
float total=0;
ifstream fin;
fin.open("prods.bin",ios::in|ios::binary);
while(fin.read((char*)&p,sizeof(p)))
{
if(rec<1)
{
header();
p.heading();
}
//p.showData();
p.listView();
rec++;
total+=p.getAmount();
}
fin.close();
line(70);
cout<<setw(59)<<"Total Amount: "<<setw(11)<<total<<endl;
line(70);
cout<<"\nData displayed....\n";
}

void Search()
{
int n,flag=0;
header();
cout<<"Enter Id to search: ";
cin>>n;
fstream fin;
fin.open("prods.bin",ios::in|ios::binary);
while(fin.read((char*)&p,sizeof(p)))
{
if(n==p.getID())
{
p.showData();
flag++;
}
}
fin.close();
if(flag==0)
cout<<"The Product ID: "<<n<<" not found....\n";
}

void Delete()
{
int n,flag=0;
header();
cout<<"Enter Id to delete: ";
cin>>n;
ifstream fin;
ofstream fout,out;
fin.open("prods.bin",ios::in|ios::binary);
fout.open("temp.bin",ios::out|ios::binary);
out.open("trash.bin",ios::out|ios::binary|ios::app);
while(fin.read((char*)&p,sizeof(p)))
{
if(n==p.getID())
{
cout<<"Following record is deleted from file...\n";
p.showData();
out.write((char*)&p,sizeof(p));
flag++;
}
else
{
fout.write((char*)&p,sizeof(p));
}
}
fin.close();
fout.close();
out.close();
if(flag==0)
cout<<"The Product ID: "<<n<<" not found....\n";
remove("prods.bin");
rename("temp.bin","prods.bin");
}

void Modify()
{
int n,flag=0,pos;
header();
cout<<"Enter Id to modify: ";
cin>>n;
fstream fio;
fio.open("prods.bin",ios::in|ios::out|ios::binary);
while(fio.read((char*)&p,sizeof(p)))
{
if(n==p.getID())
{
pos=fio.tellg();
cout<<"Following record will be modified:\n";
p.showData();
flag++;
fio.seekg(pos-sizeof(p));
p.getData();
fio.write((char*)&p,sizeof(p));
cout<<"\nRecord Modified Successfully....\n";
}
}
fio.close();
if(flag==0)
cout<<"The Product ID: "<<n<<" not found....\n";
}

void ViewTrash()
{
int rec=0;
ifstream fin;
fin.open("trash.bin",ios::in|ios::binary);
while(fin.read((char*)&p,sizeof(p)))
{
if(rec<1)
{
header();
p.heading();
}
//p.showData();
p.listView();
rec++;
}
fin.close();
cout<<"\nData displayed....\n";
}

void line(int n)
{
int i;
for(i=1;i<n;i++)
cout<<"=";
cout<<endl;
}

void header()
{
line();
cout<<"\t\t\tPRODUCT MANAGEMENT SYSTEM\n";
line();
cout<<endl;
}

void intro()
{
clrscr();
header();
cout<<"Project Incharge: Narendra Aliani\n";
cout<<"This project is all about to know the following features\n"
    <<"1. How data is stored in the data file.\n"
    <<"2. How data is displayed from file.\n"
    <<"3. Searching, deleting and modifying of data is featured\n"
    <<"4. Secured with password protection\n"
    <<"5. Guest Login without password also available.\n";
line();
getch();
}

void conclude()
{
clrscr();
header();
cout<<"Thanks for using out project.....\n";
cout<<"Press any key to exit....\n";
getch();
exit(0);
}

void usermenu()
{
clrscr();
header();
cout<<"###################\n";
cout<<" U S E R   M E N U\n";
cout<<"###################\n";
cout<<"0. Exit\n";
cout<<"1. Admin\n";
cout<<"2. Guest\n";
cout<<"Enter your choice: ";
}

void adminmenu()
{
header();
cout<<"########################\n";
cout<<" A D M I N   M E N U \n";
cout<<"########################\n";
cout<<"0. Back to User Menu\n";
cout<<"1. Add Data\n";
cout<<"2. Show Data\n";
cout<<"3. Search Data\n";
cout<<"4. Delete Data\n";
cout<<"5. Modify Data\n";
cout<<"6. View Deleted Data\n";
cout<<"Enter your choice: ";
}

void guestmenu()
{
header();
cout<<"########################\n";
cout<<" G U E S T   M E N U \n";
cout<<"########################\n";
cout<<"0. Back to User Menu\n";
cout<<"1. Show Data\n";
cout<<"2. Search Data\n";
cout<<"Enter your choice: ";
}

void adminOps()
{
int ch;
do
{
clrscr();
adminmenu();
cin>>ch;
clrscr();
switch(ch)
{
case 0: login(); break;
case 1: Add(); break;
case 2: Display(); break;
case 3: Search(); break;
case 4: Delete(); break;
case 5: Modify(); break;
case 6: ViewTrash(); break;
}getch();
}while(ch);
}

void guestOps()
{
int ch;
do
{
clrscr();
guestmenu();
cin>>ch;
clrscr();
switch(ch)
{
case 0: login(); break;
case 1: Display(); break;
case 2: Search(); break;
}
getch();
}while(ch);
}

void admin()
{
char c, cpwd[20],pwd[]="password";
int i=0;
cout<<"Enter Password: ";
do
{
c=getch();
if(c!=13)
{
cpwd[i]=c;
cout<<"*";
i++;
}
else
{
cpwd[i]='\0';
i++;
}
}while(c!=13);

if(strcmp(pwd,cpwd)==0)
{
cout<<"\nPassword Matched....\n";
cout<<"Welcome Admin.....\n";
cout<<"Press any key to continue.\n";
getch();
adminOps();
}
else
{
cout<<"\nUnauthorized access....\n";
}
}

void login()
{
int ch;
do
{
usermenu();
cin>>ch;
switch(ch)
{
case 0: conclude(); break;
case 1: admin(); break;
case 2: guestOps(); break;
}getch();
}while(ch);
}

void main()
{
intro();
login();
}


Download the working file by clicking here....