fig06_10.cpp

c++大学教程第5版的配套书源代码

// Fig. 6.10: fig06_10.cpp
// Randomizing die-rolling program.
#include <iostream>
using std::cout;
using std::cin;
using std::endl;

#include <iomanip>
using std::setw;

#include <cstdlib> // contains prototypes for functions srand and rand
using std::rand;
using std::srand;

int main()
{
   unsigned seed; // stores the seed entered by the user

   cout << "Enter seed: ";
   cin >> seed;
   srand( seed ); // seed random number generator

   // loop 10 times
   for ( int counter = 1; counter <= 10; counter++ ) 
   {   
      // pick random number from 1 to 6 and output it
      cout << setw( 10 ) << ( 1 + rand() % 6 );

      // if counter is divisible by 5, start a new line of output
      if ( counter % 5 == 0 )
         cout << endl;
   } // end for 

   return 0; // indicates successful termination
} // end main


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 * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and               *
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