Tips and Pennies

/*
Name:           Nickelis Jarvis
Date:           8.15.14
Program Name:   Tips and Pennies
Description:    Total up tips and split a piggy bank into the smallest amount of coinage.
*/

#include <cmath>
#include <iostream>
#include <iomanip>
#include <string>

//This is used in the second part of the program, since we're counting by pennies, we need a global variable to define how many pennies are in the highest denomination.
#define PENNIES_PER_DOLLAR 100


using namespace std;

int main() {

    //Create subtotal as double-precision floating-point. Create string for account name. No subtotal variable as it's not needed (no math performed after).
    double total = 0.0;
    std::string accountName;

    //Create a struct for money denominations, first two fields are constant after initialization.
    struct money_t {
        const char* name;
        const double value;
        int units;
    };

    //Define first 2 fields for each denomination (name and value), initialize units (number of) to 0
     struct money_t money[5] = {
        { "Dollars",    1.00,   0},
        { "Quarters",   0.25,   0},
        { "Dimes",      0.10,   0},
        { "Nickels",    0.05,   0},
        { "Pennies",    0.01,   0}
     };

    //Ask for account name
    cout << "Enter account holder's name: ";
    getline(cin, accountName);

    //Ask for number of each denomination and store in 3rd data place of structure (int units), loop through each denomination.
    for (int i = 0; i <= 4; i++) {
        cout << "Enter number of " << money[i].name << ": ";
        cin >> money[i].units;
        total += (money[i].units * money[i].value);
    }

    //Output account name and total deposit, set floating point precision to fixed and round to 2 most significant digits.
    cout << "Account Name: " << accountName << endl;
    cout << fixed << setprecision(2) << "Total Deposit: $" << total << endl;

     //Ask for number of pennies in bank.
    cout << "\n\nPiggy Bank" << endl;
    cout << "Enter how many pennies are in the bank: ";
    cin >> total;

    //Perform a division, followed by changing subtotal to the modulus for further iterations.
    //Multiply value up instead of divide subtotal; reverse causes rounding errors.
    for (int i = 0; i <= 4; i++) {
        money[i].units = total / (money[i].value * PENNIES_PER_DOLLAR);
        total = fmod(total, (money[i].value * PENNIES_PER_DOLLAR));
        cout << "Number of " << money[i].name << ": " << money[i].units << endl;
    }

    //Naturally, return no error code on successful execution.
    return(0);
}