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29 lines
850 B
ReStructuredText
29 lines
850 B
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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Build a Simple Program Using Boost
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==================================
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To keep things simple, let's start by using a header-only library.
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The following program reads a sequence of integers from standard
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input, uses Boost.Lambda to multiply each number by three, and
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writes them to standard output::
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#include <boost/lambda/lambda.hpp>
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#include <iostream>
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#include <iterator>
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#include <algorithm>
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int main()
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{
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using namespace boost::lambda;
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typedef std::istream_iterator<int> in;
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std::for_each(
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in(std::cin), in(), std::cout << (_1 * 3) << " " );
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}
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Copy the text of this program into a file called ``example.cpp``.
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