Banking System Project

//***************************************************************
//                   HEADER FILE USED IN PROJECT
//****************************************************************

#include<iostream>
#include<fstream>
#include<cctype>
#include<iomanip>
using namespace std;

//***************************************************************
//                   CLASS USED IN PROJECT
//****************************************************************


class account
{
int acno;
char name[50];
int deposit;
char type;
public:
void create_account(); //function to get data from user
void show_account() const; //function to show data on screen
void modify(); //function to add new data
void dep(int); //function to accept amount and add to balance amount
void draw(int); //function to accept amount and subtract from balance amount
void report() const; //function to show data in tabular format
int retacno() const; //function to return account number
int retdeposit() const; //function to return balance amount
char rettype() const; //function to return type of account
};         //class ends here

void account::create_account()
{
cout<<"\nEnter The account No. :";
cin>>acno;
cout<<"\n\nEnter The Name of The account Holder : ";
cin.ignore();
cin.getline(name,50);
cout<<"\nEnter Type of The account (C/S) : ";
cin>>type;
type=toupper(type);
cout<<"\nEnter The Initial amount(>=500 for Saving and >=1000 for current ) : ";
cin>>deposit;
cout<<"\n\n\nAccount Created..";
}

void account::show_account() const
{
cout<<"\nAccount No. : "<<acno;
cout<<"\nAccount Holder Name : ";
cout<<name;
cout<<"\nType of Account : "<<type;
cout<<"\nBalance amount : "<<deposit;
}


void account::modify()
{
cout<<"\nAccount No. : "<<acno;
cout<<"\nModify Account Holder Name : ";
cin.ignore();
cin.getline(name,50);
cout<<"\nModify Type of Account : ";
cin>>type;
type=toupper(type);
cout<<"\nModify Balance amount : ";
cin>>deposit;
}


void account::dep(int x)
{
deposit+=x;
}

void account::draw(int x)
{
deposit-=x;
}

void account::report() const
{
cout<<acno<<setw(10)<<" "<<name<<setw(10)<<" "<<type<<setw(6)<<deposit<<endl;
}


int account::retacno() const
{
return acno;
}

int account::retdeposit() const
{
return deposit;
}

char account::rettype() const
{
return type;
}


//***************************************************************
//    function declaration
//****************************************************************
void write_account(); //function to write record in binary file
void display_sp(int); //function to display account details given by user
void modify_account(int); //function to modify record of file
void delete_account(int); //function to delete record of file
void display_all(); //function to display all account details
void deposit_withdraw(int, int); // function to desposit/withdraw amount for given account
void intro(); //introductory screen function

//***************************************************************
//    THE MAIN FUNCTION OF PROGRAM
//****************************************************************


int main()
{
char ch;
int num;
intro();
do
{
system("cls");
cout<<"\n\n\n\tMAIN MENU";
cout<<"\n\n\t01. NEW ACCOUNT";
cout<<"\n\n\t02. DEPOSIT AMOUNT";
cout<<"\n\n\t03. WITHDRAW AMOUNT";
cout<<"\n\n\t04. BALANCE ENQUIRY";
cout<<"\n\n\t05. ALL ACCOUNT HOLDER LIST";
cout<<"\n\n\t06. CLOSE AN ACCOUNT";
cout<<"\n\n\t07. MODIFY AN ACCOUNT";
cout<<"\n\n\t08. EXIT";
cout<<"\n\n\tSelect Your Option (1-8) ";
cin>>ch;
system("cls");
switch(ch)
{
case '1':
write_account();
break;
case '2':
cout<<"\n\n\tEnter The account No. : "; cin>>num;
deposit_withdraw(num, 1);
break;
case '3':
cout<<"\n\n\tEnter The account No. : "; cin>>num;
deposit_withdraw(num, 2);
break;
case '4':
cout<<"\n\n\tEnter The account No. : "; cin>>num;
display_sp(num);
break;
case '5':
display_all();
break;
case '6':
cout<<"\n\n\tEnter The account No. : "; cin>>num;
delete_account(num);
break;
case '7':
cout<<"\n\n\tEnter The account No. : "; cin>>num;
modify_account(num);
break;
case '8':
cout<<"\n\n\tThanks for using bank managemnt system";
break;
default :cout<<"\a";
}
cin.ignore();
cin.get();
}while(ch!='8');
return 0;
}


//***************************************************************
//    function to write in file
//****************************************************************

void write_account()
{
account ac;
ofstream outFile;
outFile.open("account.dat",ios::binary|ios::app);
ac.create_account();
outFile.write(reinterpret_cast<char *> (&ac), sizeof(account));
outFile.close();
}

//***************************************************************
//    function to read specific record from file
//****************************************************************

void display_sp(int n)
{
account ac;
bool flag=false;
ifstream inFile;
inFile.open("account.dat",ios::binary);
if(!inFile)
{
cout<<"File could not be open !! Press any Key...";
return;
}
cout<<"\nBALANCE DETAILS\n";

    while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
{
if(ac.retacno()==n)
{
ac.show_account();
flag=true;
}
}
inFile.close();
if(flag==false)
cout<<"\n\nAccount number does not exist";
}


//***************************************************************
//    function to modify record of file
//****************************************************************

void modify_account(int n)
{
bool found=false;
account ac;
fstream File;
File.open("account.dat",ios::binary|ios::in|ios::out);
if(!File)
{
cout<<"File could not be open !! Press any Key...";
return;
}
while(!File.eof() && found==false)
{
File.read(reinterpret_cast<char *> (&ac), sizeof(account));
if(ac.retacno()==n)
{
ac.show_account();
cout<<"\n\nEnter The New Details of account"<<endl;
ac.modify();
int pos=(-1)*static_cast<int>(sizeof(account));
File.seekp(pos,ios::cur);
File.write(reinterpret_cast<char *> (&ac), sizeof(account));
cout<<"\n\n\t Record Updated";
found=true;
  }
}
File.close();
if(found==false)
cout<<"\n\n Record Not Found ";
}

//***************************************************************
//    function to delete record of file
//****************************************************************


void delete_account(int n)
{
account ac;
ifstream inFile;
ofstream outFile;
inFile.open("account.dat",ios::binary);
if(!inFile)
{
cout<<"File could not be open !! Press any Key...";
return;
}
outFile.open("Temp.dat",ios::binary);
inFile.seekg(0,ios::beg);
while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
{
if(ac.retacno()!=n)
{
outFile.write(reinterpret_cast<char *> (&ac), sizeof(account));
}
}
inFile.close();
outFile.close();
remove("account.dat");
rename("Temp.dat","account.dat");
cout<<"\n\n\tRecord Deleted ..";
}

//***************************************************************
//    function to display all accounts deposit list
//****************************************************************

void display_all()
{
account ac;
ifstream inFile;
inFile.open("account.dat",ios::binary);
if(!inFile)
{
cout<<"File could not be open !! Press any Key...";
return;
}
cout<<"\n\n\t\tACCOUNT HOLDER LIST\n\n";
cout<<"====================================================\n";
cout<<"A/c no.      NAME           Type  Balance\n";
cout<<"====================================================\n";
while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
{
ac.report();
}
inFile.close();
}

//***************************************************************
//    function to deposit and withdraw amounts
//****************************************************************

void deposit_withdraw(int n, int option)
{
int amt;
bool found=false;
account ac;
fstream File;
File.open("account.dat", ios::binary|ios::in|ios::out);
if(!File)
{
cout<<"File could not be open !! Press any Key...";
return;
}
while(!File.eof() && found==false)
{
File.read(reinterpret_cast<char *> (&ac), sizeof(account));
if(ac.retacno()==n)
{
ac.show_account();
if(option==1)
{
cout<<"\n\n\tTO DEPOSITE AMOUNT ";
cout<<"\n\nEnter The amount to be deposited";
cin>>amt;
ac.dep(amt);
}
if(option==2)
{
cout<<"\n\n\tTO WITHDRAW AMOUNT ";
cout<<"\n\nEnter The amount to be withdraw";
cin>>amt;
int bal=ac.retdeposit()-amt;
if((bal<500 && ac.rettype()=='S') || (bal<1000 && ac.rettype()=='C'))
cout<<"Insufficience balance";
else
ac.draw(amt);
}
int pos=(-1)*static_cast<int>(sizeof(ac));
File.seekp(pos,ios::cur);
File.write(reinterpret_cast<char *> (&ac), sizeof(account));
cout<<"\n\n\t Record Updated";
found=true;
       }
         }
File.close();
if(found==false)
cout<<"\n\n Record Not Found ";
}


//***************************************************************
//    INTRODUCTION FUNCTION
//****************************************************************


void intro()
{
cout<<"\n\n\n\t  BANK";
cout<<"\n\n\tMANAGEMENT";
cout<<"\n\n\t  SYSTEM";
cout<<"\n\n\n\nMADE BY : your name";
cout<<"\n\nSCHOOL : your school name";
cin.get();
}

//***************************************************************
//    END OF PROJECT
//***************************************************************

casino game project in C++

#include <iostream>
#include <string> // Needed to use strings
#include <cstdlib> // Needed to use random numbers
#include <ctime>
using namespace std;

void drawLine(int n, char symbol);
void rules();

int main()
{
    string playerName;
    int amount; // hold player's balance amount
    int bettingAmount;
    int guess;
    int dice; // hold computer generated number
    char choice;

    srand(time(0)); // "Seed" the random generator

    drawLine(60,'_');
    cout << "\n\n\n\t\tCASINO GAME\n\n\n\n";
    drawLine(60,'_');

    cout << "\n\nEnter Your Name : ";
    getline(cin, playerName);

    cout << "\n\nEnter Deposit amount to play game : $";
    cin >> amount;
   
    do
    {
        system("cls");
        rules();
        cout << "\n\nYour current balance is $ " << amount << "\n";

// Get player's betting amount
        do
        {
            cout <<playerName<<", enter money to bet : $";
            cin >> bettingAmount;
            if(bettingAmount > amount)
                cout << "Your betting amount is more than your current balance\n"
                       <<"\nRe-enter data\n ";
        }while(bettingAmount > amount);

// Get player's numbers
        do
        {
            cout << "Guess your number to bet between 1 to 10 :";
            cin >> guess;
            if(guess <= 0 || guess > 10)
                cout << "Please check the number!! should be between 1 to 10\n"
                    <<"\nRe-enter data\n ";
        }while(guess <= 0 || guess > 10);

        dice = rand()%10 + 1; // Will hold the randomly generated integer between 1 and 10
   
        if(dice == guess)
        {
            cout << "\n\nGood Luck!! You won Rs." << bettingAmount * 10;
            amount = amount + bettingAmount * 10;
        }
        else
        {
            cout << "Bad Luck this time !! You lost $ "<< bettingAmount <<"\n";
            amount = amount - bettingAmount;
        }

        cout << "\nThe winning number was : " << dice <<"\n";
        cout << "\n"<<playerName<<", You have $ " << amount << "\n";
        if(amount == 0)
        {
            cout << "You have no money to play ";
            break;
        }
        cout << "\n\n-->Do you want to play again (y/n)? ";
        cin >> choice;
    }while(choice =='Y'|| choice=='y');
   
    cout << "\n\n\n";
    drawLine(70,'=');
    cout << "\n\nThanks for playing game. Your balance amount is $ " << amount << "\n\n";
    drawLine(70,'=');

    return 0;
}

void drawLine(int n, char symbol)
{
    for(int i=0; i<n; i++)
        cout << symbol;
    cout << "\n" ;
}

void rules()
{
    system("cls");
    cout << "\n\n";
    drawLine(80,'-');
    cout << "\t\tRULES OF THE GAME\n";
    drawLine(80,'-');
    cout << "\t1. Choose any number between 1 to 10\n";
    cout << "\t2. If you win you will get 10 times of money you bet\n";
    cout << "\t3. If you bet on wrong number you will lose your betting amount\n\n";
    drawLine(80,'-');
}

// END OF PROGRAM

Computer Security

Computer security deals with the prevention and detection of unauthorised actions by users of a computer system. It is concerned with measures we can take to
deal with intentional actions by parties behaving in some unfamiliar way.
Computer security is needed to protect the computing system and to protect the data that they store and access. Security interfaces with the working patterns
users are accustomed to and tells abouts the controlling access to information and resources. It mainly focuses on the security attacks, security mechanism and security
services.

Benefits of Using Cryptography

1. Confidentiality − Encryption technique can guard the information and communication from unauthorized revelation and access of information.

2. Authentication − The cryptographic techniques such as MAC and digital signatures can protect information against spoofing and forgeries.

3. Data Integrity − The cryptographic hash functions are playing vital role in assuring the users about the data integrity.

4. Non-repudiation − The digital signature provides the non-repudiation service to guard against the dispute that may arise due to denial of passing message by the sender.

Types of Cryptography?

Cryptography को Mainly दो Parts मे Divide किया जाता है |

1. Symmetric Cryptography - इसमें Encryption और Decryption दोनों की Keys Same होती है मतलब की इसमें एक ही Key का इस्तेमाल करके Data या information को Encrypt और Decrypt किया जाता है |

2. Asymmetric Cryptography -  इसमें Encryption और Decryption दोनों की Keys Same नहीं होती है मतलब की इसमें Encryption करने के लिए Public Key का इस्तेमाल किया जाता है और Decryption करने के लिए Private Key का इस्तेमाल किया जाता हैं |

What is Decryption in Cryptography?

Cryptography मे Decryption एक ऐसी प्रक्रिया होती हैं जिसमे की Encrypted Data को वापस Plain Text मे Convert किया जाता है | Cipher Text को Plain Text मे Convert करने की Process को Decryption कहा जाता है |

What is Encryption in Cryptography?

Cryptography मे Encryption एक ऐसी प्रक्रिया होती है जिसमे की Data या information को Unreadable Secret Codes मे Convert कर दिया जाता है और इस Converted Data को Cipher Text कहा जाता है और इसको आसानी से समझा नहीं जा सकता क्योंकि यह मशीनी भाषा मे होता है | इसे सिर्फ वही व्यक्ति समझ सकता है जिसके पास इस Encrypted हुए Data को Decrypt करने की Key मौजूद हो मतलब की इसे वापस Plain Text मे Convert करने की Key हो | Plain Text को Cipher Text मे Convert करने की Process को ही Encryption कहा जाता है |