dicesimulator.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Exercise 12.12: DiceSimulator.cpp
// This application rolls dice and counts the frequency of each side.
#include <iostream> // required to perform C++ stream I/O
#include <string>   // required to access string functions
#include <ctime>    // contains prototype for function time

// contains function prototypes for functions srand and rand
#include <cstdlib>

using namespace std; // for accessing C++ Standard Library members

// dice face constants
enum Faces { ONE = 1, TWO, THREE, FOUR, FIVE, SIX };

// global variables to store statistical information
int frequency1; // stores the frequency of rolling a 1
int frequency2; // stores the frequency of rolling a 2
int frequency3; // stores the frequency of rolling a 3
int frequency4; // stores the frequency of rolling a 4
int frequency5; // stores the frequency of rolling a 5
int frequency6; // stores the frequency of rolling a 6
int total;      // stores the total number of rolls

// function prototypes
void setFrequency( int face );
int rollDie();

// function main begins program execution
int main()
{
   // define variables
   int numberOfRolls; // stores number of times to roll dice
   int die1;          // stores the value of the first die
   int die2;          // stores the value of the second die

   // randomize random number generator using current time
   srand( time( 0 ) );

   // prompt user for number of rolls
   cout << "\nEnter the number of times to roll the dice: ";
   cin >> numberOfRolls;

   // repeat until user guesses correctly or runs out of guesses
   for ( int i = 0; i < numberOfRolls; i++ )
   {
      die1 = rollDie(); // roll first die
      die2 = rollDie(); // roll second die

      // display die values
      cout << "\nRoll " << i + 1 << endl;
      cout << "---------" << endl;
      cout << "Die 1:\tDie 2:" << endl;
      cout << die1 << "\t" << die2 << endl;
   } // end for

   // display statistics
   cout << "\nStatistical information:" << endl;
   cout << "Frequency for side one: " << frequency1 << endl;
   cout << "Frequency for side two: " << frequency2 << endl;
   cout << "Frequency for side three: " << frequency3 << endl;
   cout << "Frequency for side four: " << frequency4 << endl;
   cout << "Frequency for side five: " << frequency5 << endl;
   cout << "Frequency for side six: " << frequency6 << endl;
   cout << "Total dice rolled: " << total << endl;

   cout << "\n"; // insert newline for readability

   return 0; // indicates successful termination

} // end function main

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