46 lines
1.4 KiB
ReStructuredText
46 lines
1.4 KiB
ReStructuredText
.. Copyright David Abrahams 2006. Distributed under the Boost
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.. Software License, Version 1.0. (See accompanying
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.. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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Example
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.......
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The following example prints an array of characters in reverse order
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using ``reverse_iterator``.
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::
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char letters_[] = "hello world!";
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const int N = sizeof(letters_)/sizeof(char) - 1;
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typedef char* base_iterator;
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base_iterator letters(letters_);
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std::cout << "original sequence of letters:\t\t\t" << letters_ << std::endl;
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boost::reverse_iterator<base_iterator>
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reverse_letters_first(letters + N),
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reverse_letters_last(letters);
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std::cout << "sequence in reverse order:\t\t\t";
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std::copy(reverse_letters_first, reverse_letters_last,
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std::ostream_iterator<char>(std::cout));
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std::cout << std::endl;
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std::cout << "sequence in double-reversed (normal) order:\t";
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std::copy(boost::make_reverse_iterator(reverse_letters_last),
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boost::make_reverse_iterator(reverse_letters_first),
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std::ostream_iterator<char>(std::cout));
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std::cout << std::endl;
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The output is::
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original sequence of letters: hello world!
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sequence in reverse order: !dlrow olleh
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sequence in double-reversed (normal) order: hello world!
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The source code for this example can be found `here`__.
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__ ../example/reverse_iterator_example.cpp
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