// Roll a six-sided die 6,000,000 times.
#include <iostream>
#include <iomanip>
#include <cstdlib> // contains function prototype for rand
using namespace std;
int main()
{
unsigned int frequency1 = 0; // count of 1s rolled
unsigned int frequency2 = 0; // count of 2s rolled
unsigned int frequency3 = 0; // count of 3s rolled
unsigned int frequency4 = 0; // count of 4s rolled
unsigned int frequency5 = 0; // count of 5s rolled
unsigned int frequency6 = 0; // count of 6s rolled
// summarize results of 6,000,000 rolls of a die
for ( unsigned int roll = 1; roll <= 6000000; ++roll )
{
unsigned int face = 1 + rand() % 6; // random number from 1 to 6
// determine roll value 1-6 and increment appropriate counter
switch ( face )
{
case 1:
++frequency1; // increment the 1s counter
break;
case 2:
++frequency2; // increment the 2s counter
break;
case 3:
++frequency3; // increment the 3s counter
break;
case 4:
++frequency4; // increment the 4s counter
break;
case 5:
++frequency5; // increment the 5s counter
break;
case 6:
++frequency6; // increment the 6s counter
break;
default: // invalid value
cout << "Program should never get here!";
} // end switch
} // end for
cout << "Face" << setw( 13 ) << "Frequency" << endl; // output headers
cout << " 1" << setw( 13 ) << frequency1
<< "\n 2" << setw( 13 ) << frequency2
<< "\n 3" << setw( 13 ) << frequency3
<< "\n 4" << setw( 13 ) << frequency4
<< "\n 5" << setw( 13 ) << frequency5
<< "\n 6" << setw( 13 ) << frequency6 << endl;
} // end main
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