doublescriptedarray.h

《c＋＋大学教程实验指导书》源码

// Chapter 8 of C++ How to Program
// doublescriptedarray.h
#ifndef DARRAY_H
#define DARRAY_H

#include <iostream>

using std::ostream;
using std::istream;

// class DoubleScriptedArray definition
class DoubleScriptedArray {
   /* Write declaration for overloaded ostream operator */
   friend istream &operator>>( istream &, DoubleScriptedArray & );
                               
public:
   DoubleScriptedArray( int = 10, int = 10 );            
   DoubleScriptedArray( const DoubleScriptedArray & );   
   ~DoubleScriptedArray();                               
   /* Write prototype for overloaded = operator */     
   bool operator==( const DoubleScriptedArray & ) const; 

   /* Write header for operator!= */               
   { 
      return ! ( *this == right );

   } // end function operator!=
   
   int &operator()( int, int );   // lvalue
   /* Write prototype for overloaded() operator used as
      an rvalue */

private:
   int rows;     // number of rows in array
   int columns;  // number of columns in array
   int *ptr;     // pointer to first element of array

}; // end class DoubleScriptedArray

#endif // DARRAY_H



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