ATM Application visual studio c++

This is what i have so far:

// bring in your libraries

#include

#include

#include

#include // read/write to files

#include // time(0)

#include // setprecision( )

using namespace std;

/// Entry point to the application

// create constant values -- cannot be changed

const int EXIT_VALUE = 5;

const float DAILY_LIMIT = 400.0f;

const string FILENAME = "Accout.txt";

// create balance variable

double balance = 0.0;

// prototypes

void deposit(double* ptrBalance);

void withdrawal(double* ptrBalance, float dailyLimit); // overloaded method - this version does not take withdrawal amount

void withdrawal(double* ptrBalance, float dailyLimit, float amount); // overloaded method that takes withdrawal amount

int main()

{

/// Make a deposit

void deposit(double* ptrBalance)

{

// get deposit and validate it

float deposit = 0.0f;

do

{

cout << " Enter deposit amount: ";

cin >> deposit;

if (cin.fail()) // did they give us a character instead of a number?

{

cin.clear(); // clears fail state

cin.ignore(INT16_MAX, ' '); // clears keyboard buffer

cout << " Error. Please use numbers only. " << endl;

deposit = -1; // set deposit to a "bad" number

continue; // restart the loop

}

else if (deposit < 0.0f) // check for negative number

cout << " Error. Invalid deposit amout. " << endl;

} while (deposit < 0.0f)

// how do we get the double value located at the pointer?

// Dereference it using an asterisk!

*ptrBalance += deposit; // same as: ptrBalance = *ptrBalance + deposit;

cout << fixed << setprecision(2) << " Current ptrBalance: $" << *ptrBalance << endl;

// notice the astersk

}

/// Make a withdrawal

void withdrawal(double* ptrBalance, float dailyLimit)

{

// get the withdrawal (you should validate this input)

float amout = 0.0f;

cout << " Enter withdrawal amount: ";

cin >> amount;

// call the overloaded method version that takes

// the balance, dailyLimit, and withdrawal amount

withdrawal(ptrBalance, dailyLimit, amount);

}

/// Make a withdrawal - this overload accepts balance, dailyLimit, and withdrawal amount

void withdrawal(double* ptrBalance, float dailyLimit, float amount)

{

// take away money from the account and show the balance

if (amount > dailyLimit)

{

cout << " Error. Amount exceeds daily limit." << endl;

}

else if (amount > * ptrBalance) // notice the asterisk to dereference the pointer!

{

cout << " Error. Insufficient funds." << endl;

}

else

{

*ptrBalance -= amount; // same as: *ptrBalance = *ptrbalance - amount;

cout << " Here is your cash: $" << amount << endl;

}

cout << fixed << setprecision(2) << " Current Balance: $" << *ptrBalance << endl;

}

// look for the starting balance; otherwise generate a random starting balance

ifstream iFile(FILENAME.c_str());

if (iFile.is_open())

{

// did the file open? if so, read the balance

iFile >> balance;

iFile.close();

}

{

// if the file did not open or does not exist, create a

// random number for the starting balance

srand(time(0));

const int MIN =1000;

const int MAX =10000;

balance = rand() % (MAX - MIN + 1) + MIN;

}

cout << fixed << setprecision(2) << "Starting Balance: $" << balance << endl;

// lets create a pointer and set it to the balance variable location

double* ptrBalance = &balance;// & means "address of"

// pause before we clear the screen

cout << " Press any key to continue...";

_getch();

// create loop variable BEFORE the loop

short choice = 0;

// start the application loop

do

{

// show the menu

system("cls"); // clears the console screen -- for Mac, use system("clear")

cout << "Menu " << endl;

cout << "1) Deposit " << endl;

cout << "2) Withdrawal" << endl;

cout << "3) Check Balance" << endl;

cout << "4) Quick $40" << endl;

cout << "5) Exit" << endl;

// get user input

cout << " Enter your choice: ";

cin >> choice;

// run code based on the user's choice

switch (choice)

{

case 1:

deposit(ptrBalance); // passing a pointer so only four bytes have to go across the system bus!

break;

case 2:

withdrawal(ptrBalance, DAILY_LIMIT); // passing four byte pointer!

break;

case 3:

// show the balance

cout << fixed << setprecision(2) << " Current Balance: $" << balance << endl;

break;

case 4:

// get a quick $40

withdrawal(ptrBalance, DAILY_LIMIT, 40.0f);

break;

case 5:

cout << " Goodbye..." << endl;

break;

default:

cout << " Error. Please select from the menu." << endl;

break;

}

// pause

cout << " Press any key to continue...";

_getch();

}

while (choice != EXIT_VALUE);

// now that the application is over, write the new balance to the file

ofstream oFile(FILENAME.c_str());

oFile << balance << endl;

oFile.close();

return 0;

// pause

cout << " Press any key to continue...";

_getch();

return 0;

}