athos@1583: /* -*- C++ -*-
ladanyi@1636:  * demo/hello_lemon.cc - Part of LEMON, a generic C++ optimization library
athos@1583:  *
alpar@1875:  * Copyright (C) 2006 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
athos@1583:  * (Egervary Research Group on Combinatorial Optimization, EGRES).
athos@1583:  *
athos@1583:  * Permission to use, modify and distribute this software is granted
athos@1583:  * provided that this copyright notice appears in all copies. For
athos@1583:  * precise terms see the accompanying LICENSE file.
athos@1583:  *
athos@1583:  * This software is provided "AS IS" with no warranty of any kind,
athos@1583:  * express or implied, and with no claim as to its suitability for any
athos@1583:  * purpose.
athos@1583:  *
athos@1583:  */
athos@1583: 
athos@1583: ///\ingroup demos
athos@1583: ///\file
athos@1583: ///\brief LEMON style "Hello World!" program
athos@1583: ///
athos@1583: /// This program is intended to be a "Hello World!" program that shows
athos@1583: /// the very basic notions of the LEMON library: \ref graphs "graphs" and
athos@1583: /// \ref maps-page "maps". Click on the links to read more about these.
alpar@1641: ///
alpar@1641: /// \include hello_lemon.cc
athos@1583: 
klao@1520: #include <iostream>
klao@1520: #include <lemon/list_graph.h>
klao@1520: 
klao@1520: int main()
klao@1520: {
klao@1520:   typedef lemon::ListGraph Graph;
klao@1520:   typedef Graph::EdgeIt EdgeIt;
athos@1530:   typedef Graph::Edge Edge;
klao@1520:   typedef Graph::NodeIt NodeIt;
athos@1530:   typedef Graph::Node Node;
athos@1530:   typedef Graph::EdgeMap<int> LengthMap;
klao@1520:   using lemon::INVALID;
klao@1520: 
klao@1520:   Graph g;
klao@1520:   
athos@1530:   Node s=g.addNode();
athos@1530:   Node v2=g.addNode();
athos@1530:   Node v3=g.addNode();
athos@1530:   Node v4=g.addNode();
athos@1530:   Node v5=g.addNode();
athos@1530:   Node t=g.addNode();
athos@1530: 
athos@1530:   Edge s_v2=g.addEdge(s, v2);
athos@1530:   Edge s_v3=g.addEdge(s, v3);
athos@1530:   Edge v2_v4=g.addEdge(v2, v4);
athos@1530:   Edge v2_v5=g.addEdge(v2, v5);
athos@1530:   Edge v3_v5=g.addEdge(v3, v5);
athos@1530:   Edge v4_t=g.addEdge(v4, t);
athos@1530:   Edge v5_t=g.addEdge(v5, t);
klao@1520:   
athos@1530:   LengthMap length(g);
athos@1530: 
athos@1530:   length.set(s_v2, 10);
athos@1530:   length.set(s_v3, 10);
athos@1530:   length.set(v2_v4, 5);
athos@1530:   length.set(v2_v5, 8);
athos@1530:   length.set(v3_v5, 5);
athos@1530:   length.set(v4_t, 8);
athos@1530:   length.set(v5_t, 8);
klao@1520: 
athos@1526:   std::cout << "Hello World!" << std::endl;
athos@1526:   std::cout <<  std::endl;
athos@1526:   std::cout << "This is library LEMON here! We have a graph!" << std::endl;
athos@1526:   std::cout <<  std::endl;
athos@1526: 
klao@1520:   std::cout << "Nodes:";
klao@1520:   for (NodeIt i(g); i!=INVALID; ++i)
klao@1520:     std::cout << " " << g.id(i);
klao@1520:   std::cout << std::endl;
klao@1520: 
klao@1520:   std::cout << "Edges:";
klao@1520:   for (EdgeIt i(g); i!=INVALID; ++i)
klao@1520:     std::cout << " (" << g.id(g.source(i)) << "," << g.id(g.target(i)) << ")";
klao@1520:   std::cout << std::endl;
athos@1530:   std::cout <<  std::endl;
athos@1530: 
athos@1530:   std::cout << "There is a map on the edges (length)!" << std::endl;
athos@1530:   std::cout <<  std::endl;
athos@1530:   for (EdgeIt i(g); i!=INVALID; ++i)
alpar@1641:     std::cout << "length(" << g.id(g.source(i)) << ","
alpar@1641: 	      << g.id(g.target(i)) << ")="<<length[i]<<std::endl;
athos@1530: 
athos@1530:   std::cout << std::endl;
athos@1530: 
klao@1520: }