The program can be compiled with the following command:

g++ Account.cpp main.cpp -o account.exe -std=c++17 -lpthread

If you have followed all the steps as instructed, your code should compile successfully. 

It's time to execute and observe how our program works!

Don't forget that the WITHDRAWER thread always withdraws INR 1000.00, while the DEPOSITOR thread always deposits INR 2000.00. The following output conveys this at first. The WITHDRAWER thread started withdrawing, followed by the DEPOSITOR thread that seems to have deposited the money.  

Though we started the DEPOSITOR thread first and the WITHDRAWER thread next, it looks like the OS scheduler seems to have scheduled the WITHDRAWER thread first. There is no guarantee that this will always happen this way.

Going by the output, by chance, the WITHDRAWER thread and the DEPOSITOR thread seem to do their work alternately. They would continue like this for some time. At some point, both the threads would seem to work simultaneously, and that's when things would fall apart, as shown in the output ahead: 

It is very interesting to observe the last four lines of the output. It looks like both the WITHDRAWER and DEPOSITOR threads were checking the balance, and it was INR 9000.00. You may notice that there is an inconsistency in the DEPOSITOR thread's print statements; as per the DEPOSITOR thread, the current balance is INR 9000.00. Therefore, when it deposits INR 2000.00, the balance should total up to INR 11000.00. But in reality, the balance after the deposit is INR 10000.00. The reason for this inconsistency is that the WITHDRAWER thread withdrew INR 1000.00 before the DEPOSITOR thread could deposit money. Though technically the balance seems to total out correctly, things can go wrong shortly; this is when the need for thread synchronization arises.