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58 lines
2.2 KiB
C++
58 lines
2.2 KiB
C++
//=======================================================================
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// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
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//
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// This file is part of the Boost Graph Library
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//
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// You should have received a copy of the License Agreement for the
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// Boost Graph Library along with the software; see the file LICENSE.
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// If not, contact Office of Research, Indiana University,
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// Bloomington, IN 47405.
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//
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// Permission to modify the code and to distribute the code is
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// granted, provided the text of this NOTICE is retained, a notice if
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// the code was modified is included with the above COPYRIGHT NOTICE
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// and with the COPYRIGHT NOTICE in the LICENSE file, and that the
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// LICENSE file is distributed with the modified code.
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//
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// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
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// By way of example, but not limitation, Licensor MAKES NO
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// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
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// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
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// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
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// OR OTHER RIGHTS.
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//=======================================================================
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#include <iostream>
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#include <vector>
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#include <boost/graph/connected_components.hpp>
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#include <boost/graph/adjacency_list.hpp>
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int
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main()
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{
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using namespace boost;
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typedef adjacency_list < vecS, vecS, undirectedS > Graph;
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typedef graph_traits < Graph >::vertex_descriptor Vertex;
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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, 4, G);
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add_edge(4, 0, G);
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add_edge(2, 5, G);
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std::vector < int >c(num_vertices(G));
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int num = connected_components(G,
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make_iterator_property_map(c.begin(),
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get(vertex_index,
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G)));
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std::cout << std::endl;
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std::vector < int >::iterator i;
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std::cout << "Total number of components: " << num << std::endl;
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for (i = c.begin(); i != c.end(); ++i)
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std::cout << "Vertex " << i - c.begin()
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<< " is in component " << *i << std::endl;
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std::cout << std::endl;
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return EXIT_SUCCESS;
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}
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