71 lines
3.0 KiB
C++
71 lines
3.0 KiB
C++
// fig15_12.cpp
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// Using MyArray with range-based for and with
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// C++ standard library algorithms.
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#include <iostream>
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#include <iterator>
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#include "MyArray.h"
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int main() {
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std::ostream_iterator<int> outputInt{std::cout, " "};
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std::ostream_iterator<double> outputDouble{std::cout, " "};
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std::ostream_iterator<std::string> outputString{std::cout, " "};
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std::cout << "Displaying MyArrays with std::ranges::copy, "
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<< "which requires input iterators:\n";
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MyArray ints{1, 2, 3, 4, 5, 6, 7, 8};
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std::cout << "ints: ";
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std::ranges::copy(ints, outputInt);
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MyArray doubles{1.1, 2.2, 3.3, 4.4, 5.5};
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std::cout << "\ndoubles: ";
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std::ranges::copy(doubles, outputDouble);
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using namespace std::string_literals; // for string object literals
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MyArray strings{"red"s, "orange"s, "yellow"s};
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std::cout << "\nstrings: ";
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std::ranges::copy(strings, outputString);
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std::cout << "\n\nDisplaying a MyArray with a range-based for "
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<< "statement, which requires input iterators:\n";
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for (const auto& item : doubles) {
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std::cout << item << " ";
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}
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std::cout << "\n\nCopying a MyArray with std::ranges::copy, "
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<< "which requires an input range and output iterator:\n";
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MyArray<std::string, strings.size()> strings2{};
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std::ranges::copy(strings, strings2.begin());
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std::cout << "strings2 after copying from strings: ";
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std::ranges::copy(strings2, outputString);
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std::cout << "\n\nFinding min and max elements in a MyArray "
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<< "with std::ranges::minmax_element, which requires "
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<< "a forward range:\n";
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auto [min, max] {std::ranges::minmax_element(strings)};
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std::cout << "min and max elements of strings are: "
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<< *min << ", " << *max;
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std::cout << "\n\nReversing a MyArray with std::ranges::reverse, "
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<< "which requires a bidirectional range:\n";
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std::ranges::reverse(ints);
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std::cout << "ints after reversing elements: ";
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std::ranges::copy(ints, outputInt);
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std::cout << "\n";
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}
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/**************************************************************************
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* (C) Copyright 1992-2021 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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