#include <iostream>
#include <thread>
#include <stdio.h>
using namespace std;

class Account
{
public:
    Account(int balance): balance(balance) { }
    int getBalance() const
    {
        return balance;
    }
    void deposit(int amount)
    {
        balance += amount;
    }
    bool withdraw(int amount)
    {
        if (balance >= amount)
        {
            balance -= amount;
            return true;
        }
        return false;
    }
private:
    int balance;
};

void client(int clientid, Account &account, int amount)
{
    printf("Client %d balance: %d\n", clientid, account.getBalance());
    bool result = account.withdraw(amount);
    if (result)
        printf("Client %d withdraw %d OK\n", clientid, amount);
    else
        printf("Client %d withdraw %d FAILED\n", clientid, amount);
    printf("Client %d balance: %d\n", clientid, account.getBalance());
}
int main(int argc, char *argv[])
{
    Account account(100);
    thread t1(client, 1, ref(account), 90);
    thread t2(client, 2, ref(account), 80);
    thread t3(client, 3, ref(account), 70);
    t1.join();
    t2.join();
    t3.join();
    cout << "Account balance " << account.getBalance()
              << "\n";
    return 0;
}