/* Dice Rolls program */

#include <iostream.h>
#include <lvpvector.h>
#include <lvprandom.h>

using namespace std;	// October 5, 2001

typedef lvpvector<int> CountType;

//--------------------------------------------------------------------------------
void DisplayCounts(const CountType &Count)
/*	Displays the contents of Count[2] through Count[12] in two columns
	Post: Contents of Count displayed                                                      */
{
	cout << "Roll" << "  " << "Count" << endl;
	for (int Roll=2; Roll<=12; Roll++) {
		cout << Roll << "     " << Count[Roll] << endl;
	}
}
//--------------------------------------------------------------------------------
void CountTrials(CountType &Count, int NumTrials)
/*	Simulates NumTrials rolls of two dice and stores the counts of each 
	outcome in Count
	Post: NumTrials dice rolls simulated. Count of outcomes of NumTrial 
	simulated rolls stored in Count                                                              */
{
	for (int Trial=1; Trial<=NumTrials; Trial++) {
		int Roll = (lvprandom(6) + 1) + (lvprandom(6) + 1);
		Count[Roll]++;
	}
}
//--------------------------------------------------------------------------------
int main()
{
	randomize(); 
	CountType Count(13, 0);	// Array with indexes 0 through 12,
							// each element initialized to 0
	const int NumTrials = 1000;
	CountTrials(Count, NumTrials);
	DisplayCounts(Count);
	return(0);
}