?? checkedptr.h
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/*
* This file contains code from "C++ Primer, Fourth Edition", by Stanley B.
* Lippman, Jose Lajoie, and Barbara E. Moo, and is covered under the
* copyright and warranty notices given in that book:
*
* "Copyright (c) 2005 by Objectwrite, Inc., Jose Lajoie, and Barbara E. Moo."
*
*
* "The authors and publisher have taken care in the preparation of this book,
* but make no expressed or implied warranty of any kind and assume no
* responsibility for errors or omissions. No liability is assumed for
* incidental or consequential damages in connection with or arising out of the
* use of the information or programs contained herein."
*
* Permission is granted for this code to be used for educational purposes in
* association with the book, given proper citation if and when posted or
* reproduced.Any commercial use of this code requires the explicit written
* permission of the publisher, Addison-Wesley Professional, a division of
* Pearson Education, Inc. Send your request for permission, stating clearly
* what code you would like to use, and in what specific way, to the following
* address:
*
* Pearson Education, Inc.
* Rights and Contracts Department
* 75 Arlington Street, Suite 300
* Boston, MA 02216
* Fax: (617) 848-7047
*/
#include <cstddef>
class CheckedPtr {
public:
// no default constructor; CheckedPtrs must be bound to an object
CheckedPtr(int *b, int *e): beg(b), end(e), curr(b) { }
// dereference and increment operations
// dereference operator
int& operator*();
const int& operator*() const;
// increment and decrement
CheckedPtr operator++(int); // postfix operators
CheckedPtr operator--(int);
// other members as before
CheckedPtr& operator++(); // prefix operators
CheckedPtr& operator--();
// other members as before
private:
int* beg; // pointer to beginning of the array
int* end; // one past the end of the array
int* curr; // current position within the array
};
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