fig16_09.cpp

经典的<<C how to program>一书第三版的例程。非常适合于C的初学者。

// Fig. 16.09: fig16_09.cpp
// Demonstrating the Time class set and get functions
#include <iostream>

using std::cout;
using std::endl;

#include "time3.h"

void incrementMinutes( Time &, const int );

int main()
{
   Time t;

   t.setHour( 17 );
   t.setMinute( 34 );
   t.setSecond( 25 );

   cout << "Result of setting all valid values:\n" 
        << "  Hour: " << t.getHour()
        << "  Minute: " << t.getMinute()
        << "  Second: " << t.getSecond();

   t.setHour( 234 );    // invalid hour set to 0
   t.setMinute( 43 );
   t.setSecond( 6373 ); // invalid second set to 0

   cout << "\n\nResult of attempting to set invalid hour and"
        << " second:\n  Hour: " << t.getHour()
        << "  Minute: " << t.getMinute()
        << "  Second: " << t.getSecond() << "\n\n";

   t.setTime( 11, 58, 0 );
   incrementMinutes( t, 3 );

   return 0;
}

void incrementMinutes(Time &tt, const int count)
{
   cout << "Incrementing minute " << count
        << " times:\nStart time: ";
   tt.printStandard();

   for ( int i = 0; i < count; i++ ) {
      tt.setMinute( ( tt.getMinute() + 1 ) % 60);

      if ( tt.getMinute() == 0 )
         tt.setHour( ( tt.getHour() + 1 ) % 24);

      cout << "\nminute + 1: ";
      tt.printStandard();
   }

   cout << endl;
}



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