In this lab you are to make an ATM. On start show the user amenu with four options:
1. Check Balance
2. Deposit Funds
3. Withdraw Funds
4. Exit
You should implement three functions that implement thesethree features. Each of the functions should have a variable passedby reference that has the current balance in it. You should passthe variable in as a const parameter if it shouldn’t be changed inthe function (checking the balance should not change the balance).Your program should also use default parameters. In the case ofwithdraw and deposit the default amount will be $10.00. You shouldnot let the user’s balance become negative(If
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