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//Download by http://www.NewXing.com /* * 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 <iostream> using std::cout; using std::endl; #include <cstddef> int main() { int ia[] = { 0, 1, 2 }; // sizeof returns size of the entire array size_t array_size = sizeof ia; // sizeof returns size of the pointer, not size of object to which it points int *pi = ia; size_t ptr_size = sizeof(pi); //calculate # of elements in the array size_t element_cnt = array_size / sizeof(int); cout << "array_size: " << array_size << "\nptr_size: " << ptr_size << "\nelement_cnt: " << element_cnt << endl; return 0; }