fig03_08.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 52 行

// Fig. 3.8: fig03_08.cpp
// Roll a six-sided die 6000 times
#include <iostream.h>
#include <iomanip.h>
#include <stdlib.h>

int main()
{
   int frequency1 = 0, frequency2 = 0,
       frequency3 = 0, frequency4 = 0,
       frequency5 = 0, frequency6 = 0,
       face;

   for ( int roll = 1; roll <= 6000; roll++ ) {
      face = 1 + rand() % 6;

      switch ( face ) {
         case 1:
            ++frequency1;
            break;
         case 2:
            ++frequency2;
            break;
         case 3:
            ++frequency3;
            break;
         case 4:
            ++frequency4;
            break;
         case 5:
            ++frequency5;
            break;
         case 6:
            ++frequency6;
            break;
         default:
            cout << "should never get here!";
      }
   }

   cout << "Face" << setw( 13 ) << "Frequency"
        << "\n   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;

   return 0;
}