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Making Change

nflman124 (13)
Well I'm supposed write a program that makes change using his kind of outline. The instructions are at "http://haruspex.net/csc1253/as4-5.pdf" assignment 5. Can someone help me out with this. Its not giving the correct change. See output VV
*Update on what I have*
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/*
  Name:
  Date: 14/10/10 15:04
  Description: Making Change
*/

#include <fstream>
#include <iostream>
#include <cstdlib>

using namespace std;
ifstream infile;
ofstream outfile;

void make_change(float cost, float payment, float& change,
                 int& twentiesInTill, int& tensInTill, int& fivesInTill,
                 int& dollarsInTill, int& quartersInTill, int& dimesInTill,
                 int& nickelsInTill, int& penniesInTill, int& twentiesInChange,
                 int& tensInChange, int& fivesInChange, int& dollarsInChange,
                 int& quartersInChange, int& dimesInChange,
                 int& nickelsInChange, int& penniesInChange) 
{
       change = (payment - cost);
       int changeInPennies = static_cast<int>(change * 100.0 + 0.001);
       if(changeInPennies > 2000){
          for(twentiesInChange = 0; twentiesInTill >= twentiesInChange; twentiesInChange++){
             twentiesInTill = (twentiesInTill - 1);
             changeInPennies = (changeInPennies - 2000);}
             }
       else if(changeInPennies > 1000){
          for(tensInChange = 0; tensInTill >= tensInChange; tensInChange++){
             tensInTill = (tensInTill - 1);
             changeInPennies = (changeInPennies - 1000);}
             }
       else if(changeInPennies > 500){
          for(fivesInChange = 0; fivesInTill >= fivesInChange; fivesInChange++){
             fivesInTill = (fivesInTill - 1);
             changeInPennies = (changeInPennies - 500);}
             }
       else if(changeInPennies > 100){
          for(dollarsInChange = 0; dollarsInTill >= dollarsInChange; dollarsInChange++){
             dollarsInTill = (dollarsInTill - 1);
             changeInPennies = (changeInPennies - 100);}
             }
       else if(changeInPennies > 25){
          for(quartersInChange = 0; quartersInTill >= quartersInChange; quartersInChange++){
             quartersInTill = (quartersInTill - 1);
             changeInPennies = (changeInPennies - 25);}
             }
       else if(changeInPennies > 10){
          for(dimesInChange = 0; dimesInTill >= dimesInChange; dimesInChange++){
             dimesInTill = (dimesInTill - 1);
             changeInPennies = (changeInPennies - 10);}
             }
       else if(changeInPennies > 5){
          for(nickelsInChange = 0; nickelsInTill >= nickelsInChange; nickelsInChange++){
             nickelsInTill = (nickelsInTill - 1);
             changeInPennies = (changeInPennies - 5);}
             }
       else if(changeInPennies > 1){
          for(penniesInChange = 0; penniesInTill >= penniesInChange; penniesInChange++){
             penniesInTill = (penniesInTill - 1);
             changeInPennies = (changeInPennies - 1);}
             }

       outfile << "Cost =   "<< cost << "\nPayment =   "<< payment << "\n";
       outfile << "Change =   "<< change << ", consisting of:\n" << twentiesInChange << " twenties ";
       outfile << tensInChange << " tens " << fivesInChange << " fives ";
       outfile << dollarsInChange << " dollars " << quartersInChange << " quarters ";
       outfile << dimesInChange << " dimes " << nickelsInChange << " nickels ";
       outfile << penniesInChange << " pennies\nTill Contents:\n";
       outfile << twentiesInTill << " twenties " << tensInTill << " tens ";
       outfile << fivesInTill << " fives " << dollarsInTill << " dollars " << quartersInTill << " quarters ";
       outfile << dimesInTill << " dimes " << nickelsInTill << " nickels " << penniesInTill << " pennies\n\n";
       
}
int main(){
    infile.open("transactions.dat");
       if (infile.fail()) {
          cerr << "Can't open transactions.dat for input.\n";
          return 1;}
    outfile.open("change.out");
       if (outfile.fail()){
          cerr << "Can't open change.out for output.\n";
          return 2;}
    float cost, payment, change;
    int twentiesInTill, tensInTill, fivesInTill, dollarsInTill, quartersInTill, dimesInTill, nickelsInTill, penniesInTill;
    int twentiesInChange, tensInChange, fivesInChange, dollarsInChange, quartersInChange, dimesInChange, nickelsInChange, penniesInChange;
    infile >> twentiesInTill >> tensInTill >> fivesInTill >> dollarsInTill >> quartersInTill >> dimesInTill >> nickelsInTill >> penniesInTill;
    outfile << "Initial Till Contents:\n" << twentiesInTill << " twenties " << tensInTill << " tens ";
    outfile <<  fivesInTill << " fives " << dollarsInTill << " dollars " << quartersInTill << " quarters ";
    outfile <<  dimesInTill << " dimes " << nickelsInTill << " nickels " << penniesInTill << " pennies\n\n";
    while(infile >> cost >> payment){
       make_change(cost, payment, change, twentiesInTill, tensInTill, fivesInTill,
                  dollarsInTill, quartersInTill, dimesInTill,nickelsInTill, 
                  penniesInTill, twentiesInChange, tensInChange, fivesInChange, 
                  dollarsInChange, quartersInChange, dimesInChange,
                  nickelsInChange, penniesInChange);}
    infile.close();
    outfile.close();
    return 0;
}

It outputs 
Initial Till Contents:
5 twenties 5 tens 10 fives 20 dollars 40 quarters 50 dimes 40 nickels 50 pennies

Cost =   2.83
Payment =   3
Change =   0.17, consisting of:
2001898709 twenties -1076866825 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
5 twenties 5 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   2.34
Payment =   20
Change =   17.66, consisting of:
2001898709 twenties 3 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
5 twenties 2 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   2.53
Payment =   100
Change =   97.47, consisting of:
3 twenties 3 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
2 twenties 2 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   2.3
Payment =   100
Change =   97.7, consisting of:
2 twenties 3 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
0 twenties 2 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   0.99
Payment =   1
Change =   0.00999999, consisting of:
2 twenties 3 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
0 twenties 2 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   3.21
Payment =   3.21
Change =   0, consisting of:
2 twenties 3 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
0 twenties 2 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   0.98
Payment =   20
Change =   19.02, consisting of:
2 twenties 2 tens -2 fives 2001770714 dollars 2001838330 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
0 twenties 0 tens 10 fives 20 dollars 40 quarters 24 dimes 40 nickels 50 pennies

Cost =   9.32
Payment =   10
Change =   0.68, consisting of:
2 twenties 2 tens -2 fives 2001770714 dollars 21 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
0 twenties 0 tens 10 fives 20 dollars 19 quarters 24 dimes 40 nickels 50 pennies

Cost =   5.78
Payment =   10
Change =   4.22, consisting of:
2 twenties 2 tens -2 fives 11 dollars 21 quarters 26 dimes 3477112 nickels 2686776 pennies
Till Contents:
0 twenties 0 tens 10 fives 9 dollars 19 quarters 24 dimes 40 nickels 50 pennies

Last edited on
nflman124 (13)
Ive updated it to where I'm currently at. Could anyone help me out?
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