Encapsulation - changing the code

Question

namespace SoloLearn
{
class BankAccount {
private double balance=0;
public void Deposit(double n) {
balance += n;
}
public void Withdraw(double n) {
balance -= n;
}
public double GetBalance() {
return balance;
}
}
class Program
{
static void Main(string[] args)
{
BankAccount b = new BankAccount();
b.Deposit(199);
b.Withdraw(42);
Console.WriteLine(b.GetBalance());
}
}
}
____
The code prints the value of the Balance.
How do I print the Deposit and Withdraw values on the screen?

//Credit: $199
// Debit: $42
//Balance: $157

Answer 1

If you're wanting to do it via the Main method, then the most logical means is to receive the deposit/withdraw amounts as input from the user, which would be the case in a bank application. Then just simply output their input. As well, you could also create getters in your class for it.

Give me a moment and I'll type up example that depicts both ways.

EXAMPLE (DISPLAY VIA MAIN):

https://code.sololearn.com/c9hr3bwfWUFO/#cs

namespace SoloLearn
{
class BankAccount {
private double balance=0;
public void Deposit(double n) {
balance += n;
}
public void Withdraw(double n) {
balance -= n;
}
public double GetBalance() {
return balance;
}
}

class Program
{
static void Main(string[] args)
{
double depositAmount = 0;
double withdrawlAmount = 0;
BankAccount b = new BankAccount();

// Get user input for Deposit amount and display
depositAmount = Convert.ToDouble(Console.ReadLine());
b.Deposit(depositAmount);
Console.WriteLine("Deposit Amount: " + depositAmount);

// Get user input for Withdrawl amount and display
withdrawlAmount = Convert.ToDouble(Console.ReadLine());
b.Withdraw(withdrawlAmount);
Console.WriteLine("Withdrawl Amount: " + withdrawlAmount);

Console.WriteLine("New Balance: " + b.GetBalance());
}
}
}

Answer 2

https://code.sololearn.com/cHgHlxAa1xOW/#cs

EXAMPLE WITH CLASS GETTERS:

namespace SoloLearn
{
class BankAccount {
private double balance = 0;
private double prevDeposit = 0;
private double prevWithdrawl = 0;

public void Deposit(double n) {
this.balance += n;
this.prevDeposit = n;
}

public void Withdraw(double n) {
this.balance -= n;
this.prevWithdrawl = n;
}

public double GetBalance() {
return this.balance;
}

public double getDeposit() {
return this.prevDeposit;
}

public double getWithdrawl() {
return this.prevWithdrawl;
}

}

class Program
{
static void Main(string[] args)
{
double depositAmount = 0;
double withdrawlAmount = 0;
BankAccount b = new BankAccount();

// Get user input for Deposit amount and display
depositAmount = Convert.ToDouble(Console.ReadLine());
b.Deposit(depositAmount);
Console.WriteLine("Deposit Amount: " + b.getDeposit());

// Get user input for Withdrawl amount and display
withdrawlAmount = Convert.ToDouble(Console.ReadLine());
b.Withdraw(withdrawlAmount);
Console.WriteLine("Withdrawl Amount: " + b.getWithdrawl());

Console.WriteLine("New Balance: " + b.GetBalance());
}
}
}

Answer 3

Andre A

You cannot call private values without a getter.

That is the whole point of encapsulation. 😸

try making the values public.

Answer 4

Andre A press the check next to Jakob Marley's answer.

Answer 5

Same way that you did it with the balance; use Console.WriteLine().

In your scenario, you could easily put it in the class methods.

EXAMPLE:
public void Deposit(double n) {
balance += n;
Console.WriteLine(n);
}

public void Withdraw(double n) {
balance -= n;
Console.WriteLine(n);
}

Answer 6

I appreciate the answer Jakob

And how can I do this in the Main method?

Answer 7

thank you so much