fig11_14.cpp

是有关C++编程原理教程的例子程序,全,应该对大家有所帮助

// Fig. 11.14: fig11_14.cpp
// Date class test program.
#include <iostream>
using std::cout;
using std::endl;

#include "Date.h" // Date class definition

int main()
{
   Date d1; // defaults to January 1, 1900
   Date d2( 12, 27, 1992 ); // December 27, 1992
   Date d3( 0, 99, 8045 ); // invalid date

   cout << "d1 is " << d1 << "\nd2 is " << d2 << "\nd3 is " << d3;
   cout << "\n\nd2 += 7 is " << ( d2 += 7 );

   d3.setDate( 2, 28, 1992 );
   cout << "\n\n  d3 is " << d3;
   cout << "\n++d3 is " << ++d3 << " (leap year allows 29th)";

   Date d4( 7, 13, 2002 );

   cout << "\n\nTesting the prefix increment operator:\n"
      << "  d4 is " << d4 << endl;
   cout << "++d4 is " << ++d4 << endl;
   cout << "  d4 is " << d4;

   cout << "\n\nTesting the postfix increment operator:\n"
      << "  d4 is " << d4 << endl;
   cout << "d4++ is " << d4++ << endl;
   cout << "  d4 is " << d4 << endl;
   return 0;
} // end main

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