52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
//=======================================================================
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// Copyright 2007 Aaron Windsor
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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 <iostream>
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#include <boost/graph/adjacency_list.hpp>
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#include <boost/graph/properties.hpp>
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#include <boost/graph/graph_traits.hpp>
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#include <boost/property_map/property_map.hpp>
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#include <vector>
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#include <boost/graph/connected_components.hpp>
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#include <boost/graph/make_connected.hpp>
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using namespace boost;
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int main(int argc, char** argv)
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{
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typedef adjacency_list< vecS, vecS, undirectedS,
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property< vertex_index_t, int > >
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graph;
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graph g(11);
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add_edge(0, 1, g);
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add_edge(2, 3, g);
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add_edge(3, 4, g);
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add_edge(5, 6, g);
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add_edge(6, 7, g);
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add_edge(8, 9, g);
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add_edge(9, 10, g);
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add_edge(10, 8, g);
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std::vector< graph_traits< graph >::vertices_size_type > component(
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num_vertices(g));
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std::cout << "Before calling make_connected, the graph has "
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<< connected_components(g, &component[0])
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<< " connected components" << std::endl;
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make_connected(g);
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std::cout << "After calling make_connected, the graph has "
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<< connected_components(g, &component[0])
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<< " connected components" << std::endl;
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return 0;
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}
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