40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
//=======================================================================
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// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying 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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#include <boost/config.hpp>
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#include <vector>
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#include <iostream>
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#include <boost/graph/strong_components.hpp>
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#include <boost/graph/adjacency_list.hpp>
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int main()
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{
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using namespace boost;
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typedef adjacency_list< vecS, vecS, directedS > Graph;
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const int N = 6;
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Graph G(N);
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add_edge(0, 1, G);
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add_edge(1, 1, G);
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add_edge(1, 3, G);
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add_edge(1, 4, G);
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add_edge(3, 4, G);
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add_edge(3, 0, G);
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add_edge(4, 3, G);
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add_edge(5, 2, G);
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std::vector< int > c(N);
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int num = strong_components(
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G, make_iterator_property_map(c.begin(), get(vertex_index, G), c[0]));
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std::cout << "Total number of components: " << num << std::endl;
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std::vector< int >::iterator i;
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for (i = c.begin(); i != c.end(); ++i)
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std::cout << "Vertex " << i - c.begin() << " is in component " << *i
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<< std::endl;
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return EXIT_SUCCESS;
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}
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