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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; int ia[3][4]; // array of size 3, each element is an array of ints of size 4 int main() { // row 0 is explicitly initialized; other elements implicitly 0 int ix[3][4] = {0, 3, 6, 9}; cout << ix[0][3] << " " << ix[1][0] << " " << ix[2][0] << endl; //prints 9 0 0 const size_t rowSize = 3; const size_t colSize = 4; int ia[rowSize][colSize]; // 12 uninitialized elements // for each row for (size_t i = 0; i != rowSize; ++i) // for each column within the row for (size_t j = 0; j != colSize; ++j) // initialize to its positional index ia[i][j] = i * colSize + j; cout << ia[0][0] << " " << ia[2][3] // fetches last element from the array in the last row << endl; // prints 0 11 // prints garbage: mising second dimension so this statement prints a pointer cout << ia[0] << " " << endl; int (*ip)[4] = ia; // ip points to an array of 4 ints ip = &ia[2]; // ia[2] is an array of 4 ints { typedef int int_array[4]; int_array *ip = ia; // use pointers to print the contents of the array for (int_array *p = ia; p != ia + 3; ++p) for (int *q = *p; q != *p + 4; ++q) cout << *q << endl; } cout << ia[0][0] << " " << ia[2][3] // fetches last element from the array in the last row << endl; // prints 0 11 return 0; }