78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
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// fig06_10.cpp
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// Initializing multidimensional arrays.
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#include <iostream>
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#include <array>
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#include <vector>
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constexpr size_t rows{2};
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constexpr size_t columns{3};
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void printArray(const std::array<std::array<int, columns>, rows>& a);
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template <typename T>
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void printArrayTemplate(const T& a);
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int main() {
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constexpr std::array values1{std::array{1, 2, 3}, std::array{4, 5, 6}};
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constexpr std::array values2{std::array{1, 2, 3}, std::array{4, 5, 0}};
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constexpr std::array < std::array<int,3>, 2> values3{std::array{1, 2, 3}, std::array{4, 5, 6}};
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std::vector < std::vector<int>> values3_vec{std::vector<int>{1, 2, 3}, std::vector<int>{4, 5, 6}};
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std::cout << "values1 by row:\n";
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printArray(values1);
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std::cout << "\nvalues2 by row:\n";
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printArray(values2);
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std::cout << "\nvalues3 by row:\n";
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printArrayTemplate(values3);
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std::cout << "\nvalues3_vec by row:\n";
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printArrayTemplate(values3_vec);
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}
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// output array with two rows and three columns
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void printArray(const std::array<std::array<int, columns>, rows>& a) {
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// loop through array's rows
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for (const auto& row : a) {
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// loop through columns of current row
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for (const auto& element : row) {
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std::cout << element << ' ';
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}
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std::cout << '\n'; // start new line of output
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}
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}
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template <typename T>
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void printArrayTemplate(const T& a) {
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// loop through array's rows
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for (const auto& row : a) {
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// loop through columns of current row
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for (const auto& element : row) {
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std::cout << element << ' ';
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}
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std::cout << '\n'; // start new line of output
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}
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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