Bank Management System in C++
Posted by Samath
Last Updated: January 01, 2021
  29500

This is a Bank Management System program written using the C++ programming language. Commercial or retail banks use this type of software to record and manage the transactions. Many Computer Science students will find this program useful, not only because it is a completely designed program that can be used for an assignment but It actually demonstrates many features of the C++ programming language.

#include<iostream>
#include<fstream>
#include<cctype>
#include<iomanip>
using namespace std;
class account
{
        int accountnumber;
        char name[50];
        int deposit;
        char type;
public:
        void create_account();
        void show_account();
        void modify_account();
        void deposit_funds(int);
        void draw_funds(int);  
        void get_report();
        int get_accountnumber();    
        int get_funds();       
        char get_accounttype();
};       

void account::create_account()
{
        cout<<"\nEnter The account Number: ";
        cin>>accountnumber;
        cout<<"\nEnter The Name of The account Holder : ";
        cin.ignore();
        cin.getline(name,50);
        cout<<"\nEnter account type (enter s - saving or c - credit): ";
        cin>>type;
        type=toupper(type);
        cout<<"\nEnter The Initial amount(500 or more for Saving and 1000 or more for current ): ";
        cin>>deposit;
        cout<<"\n\n\nAccount Created Successfully...";
}

void account::show_account()
{
        cout<<"\nAccount Number: "<<accountnumber;
        cout<<"\nAccount Holder Name: "<<name;
        cout<<"\nType of Account: "<<type;
        cout<<"\nBalance amount: "<<deposit;
}

void account::modify_account()
{
        cout<<"\nAccount Number: "<<accountnumber;
        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::deposit_funds(int x)
{
        deposit+=x;
}     

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

void account::get_report()
{
        cout<<accountnumber<<setw(10)<<" "<<name<<setw(10)<<" "<<type<<setw(6)<<deposit<<endl;
}

int account::get_accountnumber()
{
        return accountnumber;
}

int account::get_funds()
{
        return deposit;
}

char account::get_accounttype()
{
        return type;
}

void write_account();  
void display_sp(int);  
void modify_account(int);
void delete_account(int);
void display_all();            
void deposit_withdraw(int, int);


int main()
{
        char opt;
        int num;
        for(;;)
        {
                system("color 05");
                system("cls");
                 cout<<"\t\t\t\t*\t*";

  cout<<"\t\t\t\t**\t**";
   cout<<"\t\t\t\t***\t***";
   cout<<"\t\t\t\t****\t****";
   cout<<"\t\t\t\t*****\t*****";
    cout<<"\t\t\t\t******\t******";
   cout<<"\t\t\t\t*******\t*******";
   cout<<"\t\t\t\t*******\t*******";
   cout<<"\t\t\t\t******\t******";
   cout<<"\t\t\t\t*****\t*****";
   cout<<"\t\t\t\t****\t****";
   cout<<"\t\t\t\t***\t***";
   cout<<"\t\t\t\t**\t**";
   cout<<"\t\t\t\t*\t*";

 cout<<"\t\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
                cout<<"\n\t\tPress 1 to Create New Account";
                cout<<"\n\t\tPress 2 to Deposit Funds";
                cout<<"\n\t\tPress 3 to Withdraw Funds";
                cout<<"\n\t\tPress 4 to Check Balance";
                cout<<"\n\t\tPress 5 to View All Account Holder";
                cout<<"\n\t\tPress 6 to Close an Account";
                cout<<"\n\t\tPress 7 to Modify an Account";
                cout<<"\n\t\tPress 8 to Exit the Program";
 cout<<"\n\t\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n";
                cout<<"\n\t\tOption: ";
                cin>>opt;
                system("cls");
                switch(opt)
                {
                case '1':
                system("color 02");
                        write_account();
                        break;
                case '2':
                system("color 03");
                        cout<<"\n\n\tEnter The account No. : "; cin>>num;
                        deposit_withdraw(num, 1);
                        break;
                case '3':
                system("color 06");
                        cout<<"\n\n\tEnter The account No. : "; cin>>num;
                        deposit_withdraw(num, 2);
                        break;
                case '4':
                system("color 08");
                        cout<<"\n\n\tEnter The account No. : "; cin>>num;
                        display_sp(num);
                        break;
                case '5':
                system("color 9");
                        display_all();
                        break;
                case '6':
                system("color 10");
                        cout<<"\n\n\tEnter The account No. : "; cin>>num;
                        delete_account(num);
                        break;
                 case '7':
                 system("color 11");
                        cout<<"\n\n\tEnter The account No. : "; cin>>num;
                        modify_account(num);
                        break;
                 case '8':
                 system("color 04");
                        cout<<"\n\n\tThanks for using Bank Managemnt System";
                        break;
                 default :cout<<"Invalid Option\n";
                }
                cin.ignore();
                cin.get();             
                if(opt=='8')
                break;
        }
        return 0;
}

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();
}

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.get_accountnumber()==n)
                {
                       ac.show_account();
                        flag=true;
                }
        }
        inFile.close();
        if(flag==false)
                cout<<"\n\nAccount number does not exist";
}

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.get_accountnumber()==n)
                {
                        ac.show_account();
                        cout<<"\n\nEnter The New Details of account: "<<endl;
                        ac.modify_account();
                        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 ";
}

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.get_accountnumber()!=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...";
}

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<<"Account No.      Name           Type Balance\n";
        cout<<"====================================================\n";
        while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
        {
                ac.get_report();
        }
        inFile.close();
}

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.get_accountnumber()==n)
                {
                       ac.show_account();
                        if(option==1)
                        {
                                cout<<"\n\n\tTO DEPOSITE AMOUNT ";
                                cout<<"\n\nEnter The amount to be deposited: ";
                                cin>>amt;
                                ac.deposit_funds(amt);
                        }
                        if(option==2)
                        {
                                cout<<"\n\n\tTO WITHDRAW AMOUNT ";
                                cout<<"\n\nEnter The amount to be withdraw: ";
                                cin>>amt;
                                int bal=ac.get_funds()-amt;
                                if((bal<500 && ac.get_accounttype()=='S') || (bal<1000 && ac.get_accounttype()=='C'))
                                        cout<<"Insufficience balance";
                                else
                                        ac.draw_funds(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 ";
}