correct

#include <iostream>
#include <iomanip>

using namespace std;
void menu();
bool withdraw(float&, const float);
bool deposit(float&, const float);
void checkBalance(float);
int main()
{
	bool leaveLoop = true;
	int choice;
	float balance = 0;
	float amount;
	char op;
	while (true)
	{
		menu();
		cin >> choice;
			switch (choice)
			{
			case(1):
				checkBalance(balance);
				break;
			case(2):
				char op;
				cout << " Would you like to deposit $10 by default or a custom amount, Type Y for Default or N for custom ? " << endl
					;
				cin >> op;
				if (op == 'Y')
				{
					amount = 10;
					deposit(balance, amount);
					cout << showpoint << setprecision(2) <<
						fixed << "You have deposited $" << amount << endl;
					cout << "Your total balance is now: $"
						<< balance << endl << endl;
				}
				else
				{
					cout << "Please enter the amount you would like to deposit : $";
					cin >> amount;
					cout << endl;
					deposit(balance, amount);
					cout << showpoint << setprecision(2) <<
						fixed << "You have deposited $" << amount << endl;
					cout << "Your total balance is now: $"
						<< balance << endl << endl;
				}
				break;
			case(3):
				char op1;
				cout << " Would you like to withdraw $10 by default or a custom amount, Type Y for Default or N for custom ? " << endl
					;
				cin >> op1;
				if (op1 == 'Y')
				{
					amount = 10;
					withdraw(balance, amount);


				}
				else
				{
					cout << "Please enter the amount you would like to withdraw : $";
					cin >> amount;
					cout << endl;
					withdraw(balance, amount);

				}
				break;
			case(4):
				leaveLoop = false;
				cout << "Goodbye!";
				break;
			}
		if (leaveLoop == false)
			break;
	}
	return 0;
}
void checkBalance(float balance)
{
	cout << std::fixed;
	cout << std::setprecision(2);
	cout << "Your current account balance is : " << balance << endl;
}
bool deposit(float& balance, const float amount = 10)
{
	balance = balance + amount;

	cout << std::fixed;
	cout << std::setprecision(2);
	cout << "Amount $" << amount << " successfully deposited into your account" << endl;
	return true;
}
bool withdraw(float& balance, const float amount = 10)
{
	if (balance >= amount)
	{

		balance = balance - amount;

		cout << showpoint << setprecision(2) <<
			fixed << "You have withdrawn $" << amount << endl;
		cout << "Your total balance is now: $"
			<< balance << endl << endl;
	}
	else
	{
		cout << "Insufficient Funds!" << endl;
	}
	return true;
}
	void menu()
	{
		cout << "<-----Menu----->\n Please Select an option.\n 1. Check Balance\n 2. Deposit Funds\n 3. Withdraw Funds\n 4. Exit" << endl;


	}