fig11_08.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. 11.8: fig11_08.cpp
// Array class test program.
#include <iostream>
using std::cout;
using std::cin;
using std::endl;

#include "Array.h"

int main()
{
   Array integers1( 7 ); // seven-element Array
   Array integers2; // 10-element Array by default

   // print integers1 size and contents
   cout << "Size of Array integers1 is " 
      << integers1.getSize()
      << "\nArray after initialization:\n" << integers1;

   // print integers2 size and contents
   cout << "\nSize of Array integers2 is " 
      << integers2.getSize()
      << "\nArray after initialization:\n" << integers2;

   // input and print integers1 and integers2
   cout << "\nEnter 17 integers:" << endl;
   cin >> integers1 >> integers2;

   cout << "\nAfter input, the Arrays contain:\n"
      << "integers1:\n" << integers1
      << "integers2:\n" << integers2;

   // use overloaded inequality (!=) operator
   cout << "\nEvaluating: integers1 != integers2" << endl;

   if ( integers1 != integers2 )
      cout << "integers1 and integers2 are not equal" << endl;

   // create Array integers3 using integers1 as an
   // initializer; print size and contents
   Array integers3( integers1 ); // invokes copy constructor

   cout << "\nSize of Array integers3 is "
      << integers3.getSize()
      << "\nArray after initialization:\n" << integers3;

   // use overloaded assignment (=) operator
   cout << "\nAssigning integers2 to integers1:" << endl;
   integers1 = integers2; // note target Array is smaller

   cout << "integers1:\n" << integers1
      << "integers2:\n" << integers2;

   // use overloaded equality (==) operator
   cout << "\nEvaluating: integers1 == integers2" << endl;

   if ( integers1 == integers2 )
      cout << "integers1 and integers2 are equal" << endl;

   // use overloaded subscript operator to create rvalue
   cout << "\nintegers1[5] is " << integers1[ 5 ];

   // use overloaded subscript operator to create lvalue
   cout << "\n\nAssigning 1000 to integers1[5]" << endl;
   integers1[ 5 ] = 1000;
   cout << "integers1:\n" << integers1;

   // attempt to use out-of-range subscript
   cout << "\nAttempt to assign 1000 to integers1[15]" << endl;
   integers1[ 15 ] = 1000; // ERROR: out of range
   return 0;
} // end main

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