C++

Example Runs

Enter purchase amount: 18.89

Enter amount received: 20.00

Total Change: $1.11

dollars 1

quarters 0

dimes 1

nickels 0

pennies 1

Assignment: Cash Register Your goal is to simulate a cash register. Your program should first ask for the purchase amount and then the amount paid by the customer. Then the program should calculate the total change and the quantities of each monetary denomination to arrive at that change amount. Finally, the program should output the total change followed by how many of each type of currency to give back to the customer. Algorithm outline: Calculate the change in dollars, then convert it to pennies, assigning this number into a new variable. Then use integer division to calculate the number of each coin denomination, and use the modulo operator to update the remaining number of pennies each time. This requires that we convert from floating point data (change in dollars) to integer data (change in pennies), a process called casting: specifically, we use an operator called a static cast as follows: int variable static cast( fp_variable) We have to be careful about this: it doesn't always give us the result we expectl Since it truncates (rather than rounding), a number such as 46.999999 (which, even as a double, displays as 47) will become 46 as an int (go ahead and try itl) To get around this, all we have to do is add 0.5 before casting: this will force the fp number to be rounded to the nearest int: x static_casty 1000.5 Convince yourself that this does indeed work for any decimal fraction. For this lab exercise, what are good variable names for x and y? And what data types are they, respectively? Run both of the below examples. First utilize proper casting with the "rounding" amount as described above. Then run both again without it. See the difference? (There is an urban routed all those fractions to his own account. He was supposed to have made quite a tidy sum before he was caughtl) legend about a programmer for a bank who truncated all transactions, rather than rounding them, and