ATM software

Write a C program similar to the ones used in ATM machines. Essentially your program is to handle a person's savings and checking accounts and should handle the following services:

$$ Transfer from savings account to checking account

$$ Transfer form checking account to savings account

$$ Cash withdrawal from either account

$$ Balance statements for both the accounts

Assume that the ATM machine recognizes a unique $4-$digit personal identification number $($PIN$).$ In your initial screen you are to first ask the user to type in his$/$her PIN as follows:

$***$ Welcome to Cal Poly's ATM $****$

$$ Please enter your PIN:

In response to this, the user has to enter a valid PIN. Assume that the only legal PIN is:

$1111$

If any number besides this PIN is entered, the screen is to be cleared and the same screen to be redisplayed. The user then gets a second chance to enter a valid PIN. If an illegal PIN is entered three consecutive, the following message:

$$ Too many illegal PINs. Try later again.

should appear on the screen and your program must terminate.

If the entered PIN is a legal value, the main menu is to be displayed as follows:

$***$ Welcome To Cal Poly's ATM System $***$

$(1)$ Transfer from checking account to savings account

$(2)$ Transfer from savings account to checking account

$(3)$ Savings account balance

$(4)$ Checking account balance

$(5)$ Withdraw Cash from either account

$(6)$ Exit

$==>$ Please select option $(1-6)$:

The following are some of the guidelines you should follow:

$--$ The main menu is to continue to be displayed until user selects

$$ option $6.$ At this point a message such as

$$ Thank you for using the ATM system.

$$ should appear and your program execution is to be terminated.

$--$ Users have to select options $1,2,3,4,5$ or $6.$ Redisplay the menu if any number outside the range $1$ to $6$ is entered $($Hint: Use system$("$cls$")$ command from $$library to clear the screen$)$

$--$ Withdrawl $($selection $5)$ should ask wether the user wants to withdraw from checking account or saving account and should subtract the amount specified from the appropriate account.

$--$ Savings and checking accounts both have initial balance of $$1000\mathrm{.}00$

$--$ Any transfer is allowed only if it can be honored. For example, if the savings account$$ balance is $$500\mathrm{.}00$ and the user requests to transfer $$550\mathrm{.}00$ from that savings account to the checking account an appropriate message such as

$$ "Transasction not completed"

should be displayed and the current balance of that account should be printed. The screen is to be cleared and the main menu to be displayed.

$--$ Use functions to accomplish various tasks in the menu