CODEWITHSUNDEEP
c++
wisenheimer
wisenheimer

Reputation: 9

am i on the right track? Cashier Program C++

I'm new to C++ and was wondering if i was on the right track? I'm kind of confused about this but was hoping for possibly some helpful hints on things i am missing/ have wrong....i know its not completely finished i still need to do the breakdown of the dollars,quarters....etc

Question: A cash register uses an automated coin machine to help make change. We assume that a clerk is handed money to pay for purchases. For change, the clerk returns to the customer any paper money and directs the coin machine to distribute any changes less then $1. In this exercise, you are to simulate the action of the clerk and the machine.

At the cash register, we need access to the purchase price and the payment. The change, which is the difference between the payment and the purchase prices, is a real number. The whole part represents the change in dollars and the fractional part is the change in cents that is returned in quarters, dimes, nickels, and pennies. For instance, with a payment of $10 to cover purchases of $3.08, the required change is $6.92. The clerk hand out $6 and the coin machine distributes 3 quarters, 1 dime, 1 nickel, and 2 pennies for the 92 cents.

92 = 3(25) + 1(10) + 1(5) + 2

Use real-number objects that identify the purchase price (price), the amount of payment (payment), and the change (change). The main program computes the amount of change (coinChange) and partitions it into dollars (dollars), quarters (quarters), dimes (dimes), nickels (nickels), and pennies (pennies).

You must declare constants for quarters (quarters), dimes (dimes), nickels (nickels), and pennies (pennies). You must use compound operators in the calculations. You must use setreal(w,p) and setw(n) for the output.

What I have done so far: 

// Me
// A BRIEF PROGRAM DESCRIPTION FOR CHAPTER 2, HOMEWORK 4

// COMMENT THE PREPROCESSOR 
#include <iostream.h>

// COMMENT THE PREPROCESSOR STATEMENT
#include "textlib.h"

int main( )
{

// COMMENT THE CONSTANTS
const int QUARTER_AMOUNT = 25;
const int DIME_AMOUNT = 10;

// COMMENT THE OBJECTS
double price;
double payment;
double change;

int numofDollars;
int numofQuarters;
int numofDimes;
int numofNickles;
int numofPennies;

int coinChange;


cout << "Enter the purchase total: ";
cin >> price;
cout << "Enter the payment: $";
cin >> payment;


// COMMENT THE CALCULATION
change =  payment - price;
numofDollars = int(change);
coinChange = (int((change / numofDollars) * 100));
numofQuarters = coinChange / 25;
coinChange = coinChange / (numofQuarters * 25);
numofDimes = coinChange / 10;
numofNickles = coinChange / 5;
numofPennies = coinChange / 1;

// OUTPUT THE INFORMATION

return 0;
}

Upvotes: 0

Views: 2422

Answers (1)

Robᵩ
Robᵩ

Reputation: 168616

Yes, you are on the right track. Your general structure is sound. These sorts of homework assignments almost always have a structure like this:

int main () {
  // read in the data
  ...

  // Do the math
  ...

  // Write out the data
  ...
}

You do have some math errors. Try stepping through the code with a pencil and paper, pretending that you are the computer. Also, try stepping through the code with your debugger, examining the variables after each line. Compare what actually happened to what you expected.

Upvotes: 5

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