#include <iostream>

#define QUARTER 25
#define DIME 10
#define NICKEL 5
#define PENNY 1

using namespace std;

void computeChange(int* change,
			 int* quarters,
			 int* dimes,
			 int* nickels,
			 int* pennies);

int main() {
  int quarters = 0,
      dimes = 0,
      nickels = 0,
      pennies = 0,
      change = 0,
      given = 0,
      bill = 0;

  cout << endl << "How much is the bill? ";
  cin >> bill;

  cout << "How much are you giving to cover the cost? ";
  cin >> given;  

  change = given - bill;

  computeChange(&change,
		&quarters,
		&dimes,
		&nickels,
		&pennies);

  cout << endl << "Your change is the following: " << endl
       << endl << "Quarters: " << quarters << endl
       << "Dimes: " << dimes << endl
       << "Nickels: " << nickels << endl
       << "Pennies: " << pennies << endl;
  return 0;
}

void computeChange(int *money,
			 int *quarters,
			 int *dimes,
			 int *nickels,
			 int *pennies) {

  *quarters = *money/QUARTER;
  *money -= *quarters * QUARTER;

  *dimes = *money/DIME;
  *money -= *dimes * DIME;

  *nickels = *money/NICKEL;
  *money -= *nickels * NICKEL;
 
  *pennies = *money/PENNY;
  *money -= *pennies * PENNY;
}