Question

Project 1 - Wallet

Following the class diagram shown below, create the class Wallet. A Wallet represents a carrier of bills and coins. You use your wallet to pay for things, which reduces the balance held inside. When you visit an ATM, you can fill it back up with cash again. A sample driver for this class is shown below. You should probably make a more thorough driver to test your class better. I will have my own driver which will aim to exploit any possible edge cases.

Wallet Class Description

Wallet( );
Wallet( int d, int c );

int getDollars( );
int getCents( );
bool canPayFor( int dollarAmount, int centsAmount );
void payFor( int dollarAmount, int changeAmount );
void visitATMForCash( int dollarAmount );

int dollars;
int cents;

Wallet Sample Driver Code

int atm = 0, d = 0, c = 0, x = 0, y = 0;
char cont = 'y';


cout << "Hello, how much money do you have in your wallet?"
<< endl;
cout << "Dollars: ";
cin >> d;
cout << "Cents: ";
cin >> c;
cout << endl;

Wallet w(d, c);

cout << "How many dollars would you like to withdraw from the
ATM? ";
cin >> atm;

w.visitATMForCash(atm);

cout << "Currently you have: " << endl;
cout << "Dollars: " << w.getDollars() << endl
<< "Cents: " << w.getCents() << endl <<
endl;


do {
  cout << "How much are you going to spend?" << endl;
  cout << "Dollars: ";
  cin >> x;
  cout << "Cents: ";
  cin >> y;

  if (w.canPayFor(x, y) == true) {
    w.payFor(x, y);
    cout << "\nYou now have: " << endl;
    cout << "Dollars:" << w.getDollars() << endl
<< "Cents:" << w.getCents() << endl;
  }
  else {
    cout << "\nSorry, you do not have enough money to spend.
Please spend less." << endl;
  }

  cout << "Are you spending more money (y/n)? ";
  cin >> cont;
  cout << endl;
} while (cont == 'y');

cout << "You have this amount left in your wallet: " <<
endl;
cout << "Dollars: " << w.getDollars() << " Cents:
" << w.getCents() << endl << endl;

Sample Driver Output

Hello, how much money do you have in your wallet?
Dollars:  10
Cents:  0

How many dollars would you like to withdraw from the ATM?  5
Currently you have:
Dollars: 15
Cents: 0

How much are you going to spend?
Dollars:  6
Cents:  56

You now have:
Dollars: 8
Cents: 44
Are you spending more money (y/n)?  y

How much are you going to spend?
Dollars:  10
Cents:  0

Sorry, you do not have enough money to spend. Please spend less.
Are you spending more money (y/n)?  n

You have this amount left in your wallet:
Dollars: 8 Cents: 44

Answer 1

Working code implemented in C++ and appropriate comments provided for better understanding:

Here I am attaching code for these 3 files:

• main.cpp
• wallet.cpp
• wallet.h

Source code for main.cpp:

#include "wallet.h"
#include <iostream>

using namespace std;

int main() {
int atm = 0, d = 0, c = 0, x = 0, y = 0;
char cont = 'y';

cout << "Hello, how much money do you have in your wallet?" << endl;
cout << "Dollars: ";
cin >> d;
cout << "Cents: ";
cin >> c;
cout << endl;

Wallet w(d, c);

cout << "How many dollars would you like to withdraw from the ATM? ";
cin >> atm;
w.visitATMForCash(atm);
cout << "Currently you have: " << endl;
cout << "Dollars: " << w.getDollars() << endl
<< "Cents: " << w.getCents() << endl
<< endl;

do {
cout << "How much are you going to spend?" << endl;
cout << "Dollars: ";
cin >> x;
cout << "Cents: ";
cin >> y;
if (w.canPayFor(x, y) == true) {
w.payFor(x, y);
cout << "\nYou now have: " << endl;
cout << "Dollars: " << w.getDollars() << endl
<< "Cents: " << w.getCents() << endl;
} else {
cout << "\nSorry, you do not have enough money to spend. Please spend "
"less."
<< endl;
}

cout << "Are you spending more money (y/n)? ";
cin >> cont;
cout << endl;
} while (cont == 'y');

cout << "You have this amount left in your wallet:" << endl;
cout << "Dollars: " << w.getDollars() << " Cents: " << w.getCents() << endl
<< endl;
return 0;
}

Code Screenshots:

#include "wallet.h" #include <iostream> using namespace std; int main() { int atm - 0, d = 0, c = 0, x = 0, y = 0; char cont 'y'; 2 3 4 5 6 7 8 9 10 11 12 13 14 15 cout << "Hello, how much money do you have in your wallet?" << endl; cout << "Dollars: "; cin >> d; cout << "Cents: cin >> C; cout << endl; 16 Wallet w(d, c); cout << "How many dollars would you like to withdraw from the ATM? "; cin >> atm; w.visitATMForCash(atm); cout << "Currently you have: " << endl; cout << "Dollars: « w.getDollars() « endil << "Cents: << w.getCents() << endl << endl; == 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 do { cout << "How much are you going to spend?" << endl; cout << "Dollars: "; cin >> X; cout << "Cents: "; cin >> y; if (w.canPayFor(x, y) true) { w.payFor(x, y); cout << "\n You now have: << endl; cout << "Dollars: << w.getDollars() << endl << "Cents: << w.getCents() << endl; } else { cout << "\nSorry, you do not have enough money to spend. Please spend "less." << endl; } cout << "Are you spending more money (y/n)? "; cin >> cont; cout << endl; } while (cont == 'y'); cout << "You have this amount left in your wallet:" << endl; cout << "Dollars: " << w.getDollars() << Cents: " << w.getCents() << endl << endl; return 0; }

Source code for wallet.cpp:

#include "wallet.h"

Wallet::Wallet()
{
dollars = 0;
cents = 0;
}

Wallet::Wallet(int d, int c)
{
dollars = d;
cents = c;
}

int Wallet::getDollars()
{
return dollars;
}

int Wallet::getCents()
{
return cents;
}

bool Wallet::canPayFor(int dollarAmount, int centsAmount)
{
if (dollarAmount > dollars)
{
return false;
}
else if (dollarAmount == dollars && centsAmount > cents)
{
return false;
}
else
{
return true;
}
}

void Wallet::payFor(int dollarAmount, int centsAmount)
{
dollars -= dollarAmount;
cents -= centsAmount;
if (cents < 0)
{
cents = 100 + cents;
dollars--;
}
}

void Wallet::visitATMForCash(int dollarAmount)
{
dollars += dollarAmount;
}

Code Screenshots:

#include "wallet.h" Wallet::Wallet() { dollars = 0; cents = 0; ہا Wallet::Wallet(int d, int c) { dollars = d; cents = c; ہا int Wallet::getDollars() { return dollars; ہا int Wallet::getCents() { return cents; ہا bool Wallet::canPayFor(int dollarAmount, int centsAmount) { if (dollarAmount > dollars) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 return false; else if (dollarAmount == dollars && centsAmount > cents) । } { } { return false; else return true; } } void Wallet::payFor(int dollarAmount, int centsAmount) { dollars -- dollarAmount; cents -= centsAmount; if (cents < 0) { cents = 100 + cents; dollars--; بہا ہا void Wallet::visitATMForCash(int dollarAmount) dollars += dollarAmount; { }

Source code for wallet.h:

class Wallet
{
public:
Wallet();
Wallet(int d, int c);

int getDollars();
int getCents();
bool canPayFor(int dollarAmount, int centsAmount);
void payFor(int dollarAmount, int changeAmount);
void visitATMForCash(int dollarAmount);

private:
int dollars;
int cents;
};

Code Screenshots:

class Wallet { public: Wallet(); Wallet(int d, int c); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 int getDollars(); int getCents(); bool canPayFor(int dollarAmount, int centsAmount); void payFor(int dollarAmount, int changeAmount); void visitATMForCash(int dollarAmount); private: int dollars; int cents;

Output Screenshots:

> clang++-7 -pthread -std=c++17 -o main main.cpp wallet.cpp > ./main Hello, how much money do you have in your wallet? Dollars: 10 Cents: 0 How many dollars would you like to withdraw from the ATM? 5 Currently you have: Dollars: 15 Cents: 0 How much are you going to spend? Dollars: 6 Cents: 56 You now have: Dollars: 8 Cents: 44 Are you spending more money (y/n)? y How much are you going to spend? Dollars: 10 Cents: 0 Sorry, you do not have enough money to spend. Please spend less. Are you spending more money (y/n)? n You have this amount left in your wallet: Dollars: 8 Cents: 44

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