graph/example/remove_edge_if_dir.cpp
2002-01-15 03:43:22 +00:00

90 lines
2.5 KiB
C++

//=======================================================================
// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
//
// This file is part of the Boost Graph Library
//
// You should have received a copy of the License Agreement for the
// Boost Graph Library along with the software; see the file LICENSE.
// If not, contact Office of Research, University of Notre Dame, Notre
// Dame, IN 46556.
//
// Permission to modify the code and to distribute modified code is
// granted, provided the text of this NOTICE is retained, a notice that
// the code was modified is included with the above COPYRIGHT NOTICE and
// with the COPYRIGHT NOTICE in the LICENSE file, and that the LICENSE
// file is distributed with the modified code.
//
// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
// By way of example, but not limitation, Licensor MAKES NO
// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
// OR OTHER RIGHTS.
//=======================================================================
#include <boost/config.hpp>
#include <iostream>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/graph_utility.hpp>
/*
Sample output:
original graph:
0 --> 3 2 3
1 --> 3
2 --> 0
3 --> 2
removing edges (0,3)
0 --> 2
1 --> 3
2 --> 0
3 --> 2
removing edge (0,2) and (3, 2)
0 -->
1 --> 3
2 --> 0
3 -->
*/
using namespace boost;
typedef adjacency_list<vecS, vecS, directedS> Graph;
int
main()
{
typedef std::pair<std::size_t,std::size_t> Edge;
Edge edges[6] = { Edge(0,3), Edge(0,2), Edge(0, 3),
Edge(1,3),
Edge(2, 0),
Edge(3, 2) };
#ifdef BOOST_MSVC
// VC++ can't handle iterator constructor
Graph g(4);
for (std::size_t j = 0; j < 6; ++j)
add_edge(edges[j].first, edges[j].second, g);
#else
Graph g(edges, edges + 6, 4);
#endif
std::cout << "original graph:" << std::endl;
print_graph(g, get(vertex_index, g));
std::cout << std::endl;
std::cout << "removing edges (0,3)" << std::endl;
remove_out_edge_if(vertex(0,g), incident_to(vertex(3,g), g), g);
print_graph(g, get(vertex_index, g));
std::cout << "removing edge (0,2) and (3, 2)" << std::endl;
remove_edge_if(incident_to(vertex(2,g), g), g);
print_graph(g, get(vertex_index, g));
return 0;
}