//
// Filename:     pgm3_3c.cpp
//
// Description:   Rolling Dice Simulation
//
// ENSC 104:      Digital Computer Programming
//
// Instructor:    Dr. Walsh
//
// Section:       2
//
// Date Created:  03/16/98
// Last Modified: 03/16/98
//
// Name:          N/A
//

#include <iostream.h>
#include <iomanip.h>
#include <stdlib.h>
#include <time.h>


//*************** Function Prototypes *******************
void header( void );
int rollDice( void );
int rollUnfairDice( void );
void displayResults( int, int, int, int, int, int );

main()
   {
   int freq1 = 0;
   int freq2 = 0;
   int freq3 = 0;
   int freq4 = 0;
   int freq5 = 0;
   int freq6 = 0;
   int i = 0;
   int face = 0;

   srand( time( NULL ) );

   header();

   for ( i=1; i<=6000; i++ )
      {
      face = rollDice();
//      face = rollUnfairDice();

      switch (face) 
         {
         case 1:
            ++freq1;
            break;

         case 2:
            ++freq2;
            break;

         case 3:
            ++freq3;
            break;

         case 4:
            ++freq4;
            break;

         case 5:
            ++freq5;
            break;

         case 6:
            ++freq6;
            break;
         } // End switch
      } // End for

   displayResults( freq1, freq2, freq3, freq4, freq5, freq6 );

   return 0;
   } // End main


/*
 * Function:    displayResults
 *
 * Description: This function displays the outcomes of rolling a dice.
 */
void displayResults( int f1, int f2, int f3, int f4, int f5, int f6 )
   {
   cout << "Face" << setw(13) << "Frequency\n"
        << "****" << setw(13) << "*********\n"
        << " 1" << setw(13) << f1 << endl
        << " 2" << setw(13) << f2 << endl
        << " 3" << setw(13) << f3 << endl
        << " 4" << setw(13) << f4 << endl
        << " 5" << setw(13) << f5 << endl
	<< " 6" << setw(13) << f6 << endl;   
   }

/*
 * Function:    rollDice
 *
 * Description: This simulates the rolling a FAIR dice.
 */
int rollDice( )
   {
   int roll;
   
   roll = 1 + rand() % 6;

   return roll;
   }

/*
 * Function:    rollDice
 *
 * Description: This function simulates the rolling an UNFAIR dice.
 */
int rollUnfairDice()
   {
   int roll;
   int temp;
   
   roll = 1 + rand() % 6;
   temp = 1 + rand() % 10;
   
   if ( roll == 1 && temp <= 5 )
      roll = 6;

   return roll;
   }

/*
 * Function:    header
 *
 * Description: This function prints out header information describing
 *              what this program does.
 */
void header( void )
   {
   cout << "**** DEMO PROGRAM: pgm3_3c.cpp ****\n";
   cout << "Simulating a FAIR Dice!\n";
   cout << "AND Simulating an UNFAIR Dice!\n\n";
   }