Question

please write c++ (windows) in simple way and show all the steps with the required output

Write a C++ program that simulates the operation of a simple online banking system The program starts by displaying its main menu as shown in Figure1 splay Account nformatson verity Your credit Card elect vour choice Figure 1 Main menu of the program The menu is composed of the following choices 1. When choice 1 is selected (Display Account information), the program should display account information and account balance. This information (account information and account balance) is stored in two separate text files"accountinfo.txt and "balance.txt, respectively. Figure 2 Shows sample examples of these two files First Name: your first name ast Name: your last nane count Number: 99988811231 te of Birth: 12/4/2019 і1: yourNaneauaeu.ac.ae 5000 Ln6,Cal 100% Windows- winde d Lt. Cd . 100% Figure 2 Text files: accountinfo.txt and balance.brt Once choice 1 is selected, the content of these files should be displayed as shown in Figure 3. After that the program start over displaying the main menu again once the Enter Key is pressed. rst Nane: your first name ast Name: your last name ccount Number: 99988811231 ate of Birth: 12/4/2019 na1t: yourNameğuaeu.ac.ae The Balance is :AED 25000 Figure 3 Output of "Display Account Information" choice 2. When choice 2 (withdrawal money) is selected, the program should ask the user to enter withdrawal amount which should be validated (withdrawal amount should be positive and less than the account balance). This shown in Figure 4 rour current Balance: 1500 nter withdrawa1 Amount: 20000 rou Are About to withdraar From Your Account rour, Current Balance: is00 nter withdrawel Amount: -677 You Are About to withdrau From Your Account our current Balance: 1500 nter withdrawal Amount: Figure 4 Withdrawal selection and validation Once a valild value is entered, it should be subtracted from the balance value, which is stored in file 'balance.txt, and then the file should be updated with the new balance value. To update the file you need to open the file for output; the new balance value is then can be saved to the file removing the old value. This can be done in C++ using the following: fstream outFile; outFile.openc"balance.txt", ios:sout | ios::trunc); where: (ios: :out) for output mode, (ios::trunc) for removing the file content if it does exisafor combining both operaion opening as output fle and removing its old content. 3. When choice 3 (Deposit) is selected, the program should ask the user to enter deposit amount which should be validated as positive value only. Once a valid value is entered, it should be added to the balance value, which is stored in file "balance.txt and then the file should be updated with the new balance value. This also can be accomplished as explained in point 2 above. 4. When choice 4 (Verify Your Credit Card) is selected, the program should read your credit card (for example: 5278576818418787) and verify whether it is valid or not In addition, the program must display the type (i.e. name of the company that produced the card). Each credit card must start with a specific digit (starting digit: 1st digit from left to right), which also is used to determine the card type according Table 1. Table 1. Credit card types based on the starting digit (left to right) Card Type American Express Visa MasterCard Discover Card Starting Digit 5 6 The total number of digits of a credit card number must be between 13 to 16 digits. In addition, your program should validate credit card numbers according to Luhn Rule that is basically can be described as follows (as an illustration, the rules will be applied to the credit card number 4388576018402626): A Double every even digit from right to left If the doubling results in two digits number, sunm the digits to get a single digit number 2 2 4 2 2 4 4*2-8 1 2-2 4-2 B. Compute the sum of single digit numbers obtained from step A above: C. Compute the sum of every odd digit from right to left: D. Compute the sum of the results from step B and step C: E. If the total sum from step D is divisible by 10, the card number is valid. Otherwise, it is Sum of even single-digits 4+4+8+2+3+1+7+8-37 Sum of odd digits -6+6 0+8+0+7+8+3-38 Total sum: 37 + 38 75 not valid Is 75 divisible by 10 (without remainder)? No, the card number in this example is Invalid. Sample examples of this menu choice is shown in Figure 5. he Credit Card Nusbe 1 vali the Cred t Card Nunber is Invalid Belongs ess Enter key To Start Over nter key To Start Figure 5 Credit Card Number Verification The following credit card numbers can be used to test your program: Card Type Card Number 5278576018410707 Yes MasterCard 373800410401774 4388576018402626 601195764182 Valid? American Express Yes No No 5. When choice 5 (Quit Application) is selected, the program should stop. 6. After displaying each selection, you need to clear the screen. In windows, you can use the function call system("cls")i. But in MacOS using the xcode, the best way to do it is by using something like: cout

Answer 1

#include<iostream>

#include<fstream>

#include<cstdlib>

#include<string>

using namespace std;

// Calls the method to read data from file and store it in respective variable

// Returns information using call by reference

void readFile(string &firstName, string &lastName, long long int &accNum, string &dob, string &email,

double &balance)

{

// ifstream object declared to read data from files

ifstream fReadOne;

// To store '\n' character

string newLine;

// To store heading

string heading;

// Opens the file for reading

fReadOne.open("accountInfo.txt");

// Checks if the the file unable to open for reading display's error message and stop

if(!fReadOne)

{

cout<<"\n ERROR: Unable to open the file for reading.";

exit(0);

}// End of if condition

// Loops till end of the file

while(!fReadOne.eof())

{

// Reads first name heading split by ':' symbol

getline(fReadOne, heading, ':');

// Reads first name

fReadOne>>firstName;

// Reads new line character

getline(fReadOne, newLine, '\n');

// Reads last name heading split by ':' symbol

getline(fReadOne, heading, ':');

// Reads last name

fReadOne>>lastName;

// Reads new line character

getline(fReadOne, newLine, '\n');

// Reads account number heading split by ':' symbol

getline(fReadOne, heading, ':');

// Reads account number

fReadOne>>accNum;

// Reads new line character

getline(fReadOne, newLine, '\n');

// Reads date of birth heading split by ':' symbol

getline(fReadOne, heading, ':');

// Reads date of birth

fReadOne>>dob;

// Reads new line character

getline(fReadOne, newLine, '\n');

// Reads email heading split by ':' symbol

getline(fReadOne, heading, ':');

// Reads email

fReadOne>>email;

// Reads new line character

getline(fReadOne, newLine, '\n');

}// End of while loop

// Close the file

fReadOne.close();

// Re opens the file for reading balance.txt file

fReadOne.open("balance.txt");

// Checks if the the file unable to open for reading display's error message and stop

if(!fReadOne)

{

cout<<"\n ERROR: Unable to open the file for reading.";

exit(0);

}// End of if condition

// Reads the balance

fReadOne>>balance;

// Close the file

fReadOne.close();

}// End of function

// Function to display customer information with current balance

void show(string firstName, string lastName, long long int accNum, string dob, string email,

double balance)

{

cout<<"\n First name: "<<firstName<<"\n Last Name: "<<lastName<<"\n Account Number: "<<accNum

<<"\n Date of Birth: "<<dob<<"\n Email: "<<email<<"\n The balance is: "<<balance<<endl;

}// End of function

// Function to withdraw money

// Update the balance and writes it to balance.txt file

void withdrawMoney(double &balance)

{

// To store withdraw amount

double amt;

// fstream object declared

fstream outFile;

// Opens the file for writing with deleting previous data

outFile.open("balance.txt", ios::out | ios::trunc);

// Loops till valid withdrawal amount entered by the user

do

{

// Displays current balance

cout<<"\n You are about to withdraw from your account...";

cout<<"\n Your current balance: $"<<balance;

// Accepts the withdrawal amount

cout<<"\n Enter withdrawal amount: $";

cin>>amt;

// Checks for negative or zero

if(amt <= 0)

cout<<"\n Negative amount not allowed.";

// Checks for over drawn

else if(amt > balance)

cout<<"\n Overdrawn not allowed.";

// Otherwise valid amount

else

{

// Update the balance by subtracting withdrawal amount from current balance

balance -= amt;

// Writes current balance to file

outFile<<balance;

// Come out of the loop

break;

}// End of else

}while(1); // End of do while loop

// Close the file

outFile.close();

}// End of function

// Function to deposit money

// Update the balance and writes it to balance.txt file

void depositMoney(double &balance)

{

// To store deposit amount

double amt;

// fstream object declared

fstream outFile;

// Opens the file for writing with deleting previous data

outFile.open("balance.txt", ios::out | ios::trunc);

// Loops till valid withdrawal amount entered by the user

do

{

// Displays current balance

cout<<"\n You are about to withdraw from your account...";

cout<<"\n Your current balance: $"<<balance;

// Accepts the deposit amount

cout<<"\n Enter deposit amount: $";

cin>>amt;

// Checks for negative or zero

if(amt <= 0)

cout<<"\n Negative amount not allowed.";

// Otherwise valid amount

else

{

// Update the balance by adding deposit amount from current balance

balance += amt;

// Writes current balance to file

outFile<<balance;

// Come out of the loop

break;

}// End of else

}while(1); // End of do while loop

// Close the file

outFile.close();

}// End of function

void validCreditCard()

{

string creditCardNumber;// = "5278576018410707";

int finalSum = 0, sumEven = 0, sumOdd = 0, evenDigit = 0, oddDigit = 0;

cout<<"\n Enter credit card number: ";

cin>>creditCardNumber;

// Repeats once for each digit for the creditCardNumber.

// digit position decrements by one on each pass from last position to first position

for (int digitPos = creditCardNumber.length(); digitPos > 0; digitPos--)

{

// Checks if digit position is even

if (digitPos % 2 == 0)

{

// Extracts odd digit by converting digit position character to integer

oddDigit = (int) creditCardNumber[digitPos - 1] - '0';

// Calculates sum

sumOdd = sumOdd + oddDigit;

}// End of if condition

// Otherwise odd digit

else

{

// Extracts even digit by converting digit position character to integer

evenDigit = ((int) creditCardNumber[digitPos - 1] - '0') * 2;

evenDigit = evenDigit % 10 + evenDigit / 10;

// Calculates sum

sumEven = sumEven + evenDigit;

}// End of else

}// End of for loop

// Calculates final sum of odd and even sum

finalSum = sumOdd + sumEven;

// Checks if final sum is divisible by 10

if (finalSum % 10 == 0)

{

// Extracts the first digit convert it to integer

int digit = (int)creditCardNumber[0] - '0';

cout<<"\n The credit card number is ";

// Checks if digit is 3 then display American Express

if(digit == 3)

cout<<"valid it belongs to American Express."<<endl;

// Checks if digit is 4 then display Visa

else if(digit == 4)

cout<<"valid it belongs to Visa."<<endl;

// Checks if digit is 5 then display MasterCard

else if(digit == 5)

cout<<"valid it belongs to MasterCard."<<endl;

// Checks if digit is 6 then display Discover Card

else if(digit == 6)

cout<<"valid it belongs to Discover Card."<<endl;

// Otherwise invalid card

else

cout<<"\n The credit card number is in valid."<<endl;

}// End of if condition

// Otherwise final sum is not divisible by 10

else

cout<<"\n The credit card number is in valid."<<endl;

}// End of function

// Function to display menu, accept user choice and return user choice

int menu()

{

// To store user choice

int ch;

// Displays menu

cout<<"\n \t--------------------------------------------------------------";

cout<<"\n \t| Welcome to Online Banking System |";

cout<<"\n \t--------------------------------------------------------------";

cout<<"\n\n 1. Display Account Information";

cout<<"\n 2. Withdraw money";

cout<<"\n 3. Deposit money";

cout<<"\n 4. Verify your Credit Card";

cout<<"\n 5. Quit Application";

// Accept user choice

cout<<"\n Select your Choice:";

cin>>ch;

// Return user choice

return ch;

}// End of function

// main function definition

int main()

{

// To store first, last name, date of birth and email read from file

string firstName, lastName, dob, email;

// To store account number

long long int accNum;

// Tot store current balance

double balance;

// Calls the method to read data from file and store it in respective variable

readFile(firstName, lastName, accNum, dob, email, balance);

// Loops till user choice is not 5

do

{

// Calls the function to accept user choice

// calls appropriate method based on return user choice

switch(menu())

{

case 1:

show(firstName, lastName, accNum, dob, email, balance);

system("pause");

system("cls");

break;

case 2:

withdrawMoney(balance);

system("pause");

system("cls");

break;

case 3:

depositMoney(balance);

system("pause");

system("cls");

break;

case 4:

validCreditCard();

system("pause");

system("cls");

break;

case 5:

exit(0);

break;

default:

cout<<"\n Invalid choice.";

}// End of switch case

}while(1);// End of do - while loop

}// End of main function

Sample Output:

--------------------------------------------------------------

| Welcome to Online Banking System |

--------------------------------------------------------------

1. Display Account Information

2. Withdraw money

3. Deposit money

4. Verify your Credit Card

5. Quit Application

Select your Choice:1

First name: Pyari

Last Name: Sahu

Account Number: 99988811231

Date of Birth: 12/4/2019

Email: pyarimohan@uaeu.ac.in

The balance is: 25000

Press any key to continue . . .

--------------------------------------------------------------

| Welcome to Online Banking System |

--------------------------------------------------------------

1. Display Account Information

2. Withdraw money

3. Deposit money

4. Verify your Credit Card

5. Quit Application

Select your Choice:2

You are about to withdraw from your account...

Your current balance: $25000

Enter withdrawal amount: $-1000

Negative amount not allowed.

You are about to withdraw from your account...

Your current balance: $25000

Enter withdrawal amount: $26000

Overdrawn not allowed.

You are about to withdraw from your account...

Your current balance: $25000

Enter withdrawal amount: $2000

Press any key to continue . . .

--------------------------------------------------------------

| Welcome to Online Banking System |

--------------------------------------------------------------

1. Display Account Information

2. Withdraw money

3. Deposit money

4. Verify your Credit Card

5. Quit Application

Select your Choice:1

First name: Pyari

Last Name: Sahu

Account Number: 99988811231

Date of Birth: 12/4/2019

Email: pyarimohan@uaeu.ac.in

The balance is: 23000

Press any key to continue . . .

--------------------------------------------------------------

| Welcome to Online Banking System |

--------------------------------------------------------------

1. Display Account Information

2. Withdraw money

3. Deposit money

4. Verify your Credit Card

5. Quit Application

Select your Choice:3

You are about to withdraw from your account...

Your current balance: $23000

Enter deposit amount: $-1000

Negative amount not allowed.

You are about to withdraw from your account...

Your current balance: $23000

Enter deposit amount: $1000

Press any key to continue . . .

--------------------------------------------------------------

| Welcome to Online Banking System |

--------------------------------------------------------------

1. Display Account Information

2. Withdraw money

3. Deposit money

4. Verify your Credit Card

5. Quit Application

Select your Choice:4

Enter credit card number: 5278576018410707

The credit card number is valid it belongs to MasterCard.

Press any key to continue . . .

--------------------------------------------------------------

| Welcome to Online Banking System |

--------------------------------------------------------------

1. Display Account Information

2. Withdraw money

3. Deposit money

4. Verify your Credit Card

5. Quit Application

Select your Choice:5

balance.txt file contents

24000

accountInfo.txt file contents

First Name: Pyari

Last Name: Sahu

Account Number: 99988811231

Date of Birth: 12/4/2019

Email: pyarimohan@uaeu.ac.in