Microsoft Visual C 2019 2021 〈90% PLUS〉

// Constructor implementation BankAccount::BankAccount(double initialBalance) : balance(initialBalance) { if (initialBalance < 0) { throw std::invalid_argument("Initial balance cannot be negative."); } }

// Withdraw money from the account bool withdraw(double amount);

public: // Constructor BankAccount(double initialBalance = 0.0); microsoft visual c 2019 2021

// main.cpp #include "BankAccount.h" #include <iostream>

// Get the current balance double getBalance() const; }; // main.cpp #include "BankAccount.h" #include &lt

account.deposit(500.0); std::cout << "Balance after deposit: $" << account.getBalance() << std::endl;

class BankAccount { private: double balance; "Balance after deposit: $" &lt

// Deposit money into the account void deposit(double amount);