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41 lines
965 B
C++
41 lines
965 B
C++
// Range v3 library
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//
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// Copyright Jeff Garland 2017
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//
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// Use, modification and distribution is subject to the
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// Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Project home: https://github.com/ericniebler/range-v3
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//
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///[count]
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// This example demonstrates counting the number of
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// elements that match a given value.
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// output...
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// vector: 2
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// array: 2
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#include <iostream>
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#include <range/v3/algorithm/count.hpp> // specific includes
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#include <vector>
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using std::cout;
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int
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main()
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{
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std::vector<int> v{6, 2, 3, 4, 5, 6};
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// note the count return is a numeric type
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// like int or long -- auto below make sure
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// it matches the implementation
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auto c = ranges::count(v, 6);
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cout << "vector: " << c << '\n';
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std::array<int, 6> a{6, 2, 3, 4, 5, 6};
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c = ranges::count(a, 6);
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cout << "array: " << c << '\n';
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}
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///[count]
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