Bank Management System Project with C++

Published January 09, 2022

In this C++ Projects we are going to create C++ Bank Management System. This BMS is a console based application which can be used by Customers for Bank Related Transactions. It is a very simplified application and is very user friendly. We developed this project under Codeblocks editor. This Bank Management System project consist of below modules

Create New Bank Account
Deposit Amount to the Account
Withdraw amount from your account
Check Balance Inquiry
Display All Account Holders List
Update Bank Account
Close Account

This C++ Bank Management System projects will be useful for academic engineers, student like CBSE board student who want to create their Mini Projects for respected academic year.

Let's create s C++ Project in Codeblocks IDE

Step 1: Launch Codeblocks IDE and Create New Project
It will launch below window, select Console Application and click Finish

Click Finish

Select C++ from the list

Now Enter Project name C++ Bank Management System and select destination path of the project and click Next

To run C++ code first we need to compile the code, to compile the c++ code we will select GNU compiler for this project and click finish

Now your c++ Bank Management System project will created

Bank Management System Management Project Source code

Step 2: Create a Account class to handle the Bank Account
This Account class contains properties like acno,name, deposit and type of account
and declare functions to add each module functionality

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

Step 3: Create Account
This Module will create an account. We will ask user to enter hie account No, Account Holder Name, Account type (Current/savings) and deposit amount.

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();
}

Step 4: Deposit and Withdraw Amount

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 ";
}

Step 6: Check Balance Inquiry

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";
}

Step 7: Display All Bank Account Holders 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();
}

Step 8: Modify Account

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 ";
}

Step 9: Close an Account

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 ..";
}

Step 10: Now create a Menu in main.cpp file to execute all above functions

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;
}

Complete code for C++ Bank Management System project

#include <iostream>

#include<iostream>
#include<fstream>
#include<cctype>
#include<iomanip>

using namespace std;

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
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
//****************************************************************


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;
}

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 : RRTutors";
   cout<<"\n\n Bank : Bank Of RRT";
   cin.get();
}

Conclusion: In this C++ Project tutorial we create bank management System Project with Add account, display balance, modify account, close bank account features.

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