/*
 *  Duy Nguyen
 *
 *  Assignment 2.1
 *
 *  This program allows the user to input the number of half dollars,
 *  quarters, dimes, nickels, and pennies.  It will then compute the
 *  total number of coins entered and the equivalent number of pennies
 *  entered.
 *
 */



#include <iostream.h>


int main()
{
int	hd, q, d, n, p;       // variables declaration 
int	tot_pen, tot_coins;   // declaration of output variables


	cout << "This program asks the user to input 5 things :\n";
	cout << "  1)  Amount of half dollars\n";
	cout << "  2)  Amount of quarters\n";
	cout << "  3)  Amount of dimes\n";
	cout << "  4)  Amount of nickels\n";
	cout << "  5)  Amount of pennies\n";
	cout << "It will then compute the total number of coins entered \n";
	cout << "and the equivalent number of pennies entered.\n";
	cout << "Remember that all number entered must be positive integers.";
	cout << "\nThe program will continue to ask for inputs.  Enter -999 ";
	cout << "\nfor any of the entries to quit the program.\n\n";


	while (1)
	{

	   cout << "Enter half dollars > ";
	   cin >> hd;
	   if (hd == -999) return(0);
	   cout << "Enter quarters > ";
	   cin >> q;
	   if (q == -999) return(0);
	   cout << "Enter dimes > ";
	   cin >> d;
	   if (d == -999) return(0);
	   cout << "Enter nickels > ";
	   cin >> n;
	   if (n == -999) return(0);
	   cout << "Enter pennies > ";
  	   cin >> p;
	   if (p == -999) return(0);

	   if ((hd >= 0) && (q >= 0) && (d >= 0) && (n >= 0) && (p >= 0))
	   {
	      tot_coins = hd + q + d + n + p;
	      tot_pen = 50*hd + 25*q + 10*d + 5*n + p;

	      cout << "You entered :";
	      cout.width(5);
	      cout << hd << " half dollars \n"; 
	      cout.width(18);
	      cout << q << " quarters \n";
	      cout.width(18);
	      cout << d << " dimes \n";
	      cout.width(18);
	      cout << n << " nickels \n";
	      cout.width(18);
	      cout << p << " pennies \n";
	      cout << "\n";
	      cout << "You have entered " << tot_coins << " coins";
	      cout << " for a total of " << tot_pen << " pennies. \n \n";
	   }   
	   else
	   {
	      cout << "You have entered an incorrect input.\n";
	      cout << "Please re-enter.\n\n";
	   }   // End if

	}    // End while loop

}


--------------------------------------------------------------------------


/*
 *  Duy Nguyen
 *
 *  Assignment 2.2
 *
 *  This program allows the user to input the number of half dollars,
 *  quarters, dimes, nickels, and pennies.  It will then compute the
 *  total number of coins entered and the equivalent number of pennies
 *  entered.
 *
 */



#include <iostream.h>


int main()
{
int	hd, q, d, n, p;       // variables declaration 
int	tot_coins;   	      // declaration of output variables
double  amt;		      // dollar amount equivalent


	cout << "This program asks the user to input 5 things :\n";
	cout << "  1)  Amount of half dollars\n";
	cout << "  2)  Amount of quarters\n";
	cout << "  3)  Amount of dimes\n";
	cout << "  4)  Amount of nickels\n";
	cout << "  5)  Amount of pennies\n";
	cout << "It will then compute the total number of coins entered \n";
	cout << "and the equivalent number of pennies entered.\n";
	cout << "Remember that all number entered must be positive integers.";
	cout << "\nThe program will continue to ask for inputs.  Enter -999 ";
	cout << "\nfor any of the entries to quit the program.\n\n";


	while (1)
	{

	   cout << "Enter half dollars > ";
	   cin >> hd;
	   if (hd == -999) return(0);
	   cout << "Enter quarters > ";
	   cin >> q;
	   if (q == -999) return(0);
	   cout << "Enter dimes > ";
	   cin >> d;
	   if (d == -999) return(0);
	   cout << "Enter nickels > ";
	   cin >> n;
	   if (n == -999) return(0);
	   cout << "Enter pennies > ";
  	   cin >> p;
	   if (p == -999) return(0);

	   if ((hd >= 0) && (q >= 0) && (d >= 0) && (n >= 0) && (p >= 0))
	   {
	      tot_coins = hd + q + d + n + p;
	      amt = (50*hd + 25*q + 10*d + 5*n + p)/100.0;

	      cout << "You entered :";
	      cout.width(5);
	      cout << hd << " half dollars \n"; 
	      cout.width(18);
	      cout << q << " quarters \n";
	      cout.width(18);
	      cout << d << " dimes \n";
	      cout.width(18);
	      cout << n << " nickels \n";
	      cout.width(18);
	      cout << p << " pennies \n";
	      cout << "\n";
	      cout << "You have entered " << tot_coins << " coins";
	      cout.setf(ios::fixed, ios::floatfield);
	      cout.precision(2);
	      cout << " for a total of $" << amt << ".\n\n";
	   }   
	   else
	   {
	      cout << "You have entered an incorrect input.\n";
	      cout << "Please re-enter.\n\n";
	   }   // End if

	}    // End while loop

}


--------------------------------------------------------------------------


/*  Duy Nguyen
 *  
 *  Homework 2.3  (sample)
 *  ver 1.0a (1/29/98)
 *
 *  This program rounds off an integer i to the next largest even
 *  multiple of another integer j.  The user is expected to enter
 *  both i and j.
 *
 */

#include <iostream.h>

#define Greater(a, b)           (((a)>(b)) ? (a) : (b))
#define Smaller(a, b)           (((a)<(b)) ? (a) : (b))


main()
{
	int first_num, sec_num;   // the user input integers 
	int larger, smaller;      // find smaller and larger
	int next_multiple;        // The next even multiple
	int test = 0;

	
     // Print instructions to the user
	cout << "This program allows the user to input 2 integers\n";
	cout << "It then rounds off the larger number to an even\n";
	cout << "multiple of the smaller number.  The order of input\n";
	cout << "is unimportant.  \n\n";

	while (!test)
	{
	// Get the user's inputs
	   cout << "Enter the two numbers (first_num sec_num) \n";
	   cout << "Enter 0 for any one of them to quit: ";
	   cin >> first_num >> sec_num;
	   cout << "\n\n";

	   if ( (first_num == 0) || (sec_num == 0) )
	   {
	      cout << "\n\nExiting program...\n\n";
	      test = 1;
	   }
	   else
	   {
            
	    // Find which of the inputs is smaller and which is larger
	      larger = Greater(first_num, sec_num);
	      smaller = Smaller(first_num, sec_num);

	      if (larger%smaller == 0)
	      {
	         cout << larger
		      << " rounded off to the next largest multiple of "
		      << smaller;
		 cout << " is: " << larger << "\n\n";
	      }
	      else
	      {
           /*
	      Round off larger to the next largest even multiple of
	      smaller.
            */
	         next_multiple = larger + smaller - (larger % smaller);

	   // Print result
	         cout << larger 
		      << " rounded off to the next largest multiple of "
		      << smaller;
	         cout << " is:  "  << next_multiple << "\n\n";
	      }
	   }  // if-else

	} // while

	return 0; // Sucessful finish program
	
}  // end main