INPUT: The user inputs into the console the filename of a file containing comma separated integer values that denote the value of a coin (1,5,10,25) and amount of change desired.
OUTPUT: Printed to the console is a summary of the amount of each coin from the input file that would be given to the user to total the amount of desired change they inputted. It also prints out the list of the remaining coins in their same order, with the coins given back removed from the list.
SUMMARY: With the input file of coin values and inputted desired change, the code will calculate the amount of change in coins from the input file to remove from the file, keeping intact the order of the coins and printing a summary of the process.
COMMENTS: I decided to create this code in a way that returns the least amount of coins back to the user (i.e. instead of giving the user 25 pennies, it would give them 1 quarter when possible). This code deals with invalid user input for file name, change amount, and input file values by asking the user to retry and re-enter values. I included the checks and user input inside the readCoins() and getChange() functions themselves. I have tested and implemented sections of the code to handle certain inputs/situations, such as a change plan too large, a change plan that cannot be made (i.e.$.03 with only nickels), when input does not include the appropriate amount of decimals to denote cents ($2.3 is still read as $2.30), if the file does not exist, and if the contents of the file are not valid coins. This code took me far longer than I was intending, however, I am very proud of how it turned out.
RUNNING: Begin by navigating to the project in your terminal of choice and create an executable from all files.
g++ Changemaker.cpp Changemaker.h driver.cpp LinkedList.cpp LinkedList.h Stack.cpp Stack.h -o driver.exe
NOTE, g++ in this example corresponds to the GNU Compiler Collection, which is the compiler I use for compiling my C++ programs. If using an alternative compiler, follow that compiler's documentation and you should arrive at the same results.
Next, run the executable file from the terminal.
driver.exe
The code then will run. Feel free to tinker around with the code and remember to recompile a new executable and rerun the executable in order to see all changes.
Please reach out if you would like the product descriptor for this project. I am not placing it here on the repo to prevent plagiarism if this project is taught/used again at Wheaton College MA.