[1583] | 1 | /* -*- C++ -*- |
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[1636] | 2 | * demo/hello_lemon.cc - Part of LEMON, a generic C++ optimization library |
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[1583] | 3 | * |
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| 4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 6 | * |
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| 7 | * Permission to use, modify and distribute this software is granted |
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| 8 | * provided that this copyright notice appears in all copies. For |
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| 9 | * precise terms see the accompanying LICENSE file. |
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| 10 | * |
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| 11 | * This software is provided "AS IS" with no warranty of any kind, |
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| 12 | * express or implied, and with no claim as to its suitability for any |
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| 13 | * purpose. |
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| 14 | * |
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| 15 | */ |
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| 16 | |
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| 17 | ///\ingroup demos |
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| 18 | ///\file |
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| 19 | ///\brief LEMON style "Hello World!" program |
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| 20 | /// |
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| 21 | /// This program is intended to be a "Hello World!" program that shows |
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| 22 | /// the very basic notions of the LEMON library: \ref graphs "graphs" and |
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| 23 | /// \ref maps-page "maps". Click on the links to read more about these. |
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[1641] | 24 | /// |
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| 25 | /// \include hello_lemon.cc |
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[1583] | 26 | |
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[1520] | 27 | #include <iostream> |
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| 28 | #include <lemon/list_graph.h> |
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| 29 | |
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| 30 | int main() |
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| 31 | { |
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| 32 | typedef lemon::ListGraph Graph; |
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| 33 | typedef Graph::EdgeIt EdgeIt; |
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[1530] | 34 | typedef Graph::Edge Edge; |
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[1520] | 35 | typedef Graph::NodeIt NodeIt; |
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[1530] | 36 | typedef Graph::Node Node; |
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| 37 | typedef Graph::EdgeMap<int> LengthMap; |
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[1520] | 38 | using lemon::INVALID; |
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| 39 | |
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| 40 | Graph g; |
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| 41 | |
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[1530] | 42 | Node s=g.addNode(); |
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| 43 | Node v2=g.addNode(); |
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| 44 | Node v3=g.addNode(); |
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| 45 | Node v4=g.addNode(); |
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| 46 | Node v5=g.addNode(); |
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| 47 | Node t=g.addNode(); |
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| 48 | |
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| 49 | Edge s_v2=g.addEdge(s, v2); |
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| 50 | Edge s_v3=g.addEdge(s, v3); |
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| 51 | Edge v2_v4=g.addEdge(v2, v4); |
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| 52 | Edge v2_v5=g.addEdge(v2, v5); |
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| 53 | Edge v3_v5=g.addEdge(v3, v5); |
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| 54 | Edge v4_t=g.addEdge(v4, t); |
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| 55 | Edge v5_t=g.addEdge(v5, t); |
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[1520] | 56 | |
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[1530] | 57 | LengthMap length(g); |
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| 58 | |
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| 59 | length.set(s_v2, 10); |
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| 60 | length.set(s_v3, 10); |
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| 61 | length.set(v2_v4, 5); |
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| 62 | length.set(v2_v5, 8); |
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| 63 | length.set(v3_v5, 5); |
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| 64 | length.set(v4_t, 8); |
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| 65 | length.set(v5_t, 8); |
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[1520] | 66 | |
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[1526] | 67 | std::cout << "Hello World!" << std::endl; |
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| 68 | std::cout << std::endl; |
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| 69 | std::cout << "This is library LEMON here! We have a graph!" << std::endl; |
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| 70 | std::cout << std::endl; |
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| 71 | |
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[1520] | 72 | std::cout << "Nodes:"; |
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| 73 | for (NodeIt i(g); i!=INVALID; ++i) |
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| 74 | std::cout << " " << g.id(i); |
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| 75 | std::cout << std::endl; |
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| 76 | |
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| 77 | std::cout << "Edges:"; |
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| 78 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 79 | std::cout << " (" << g.id(g.source(i)) << "," << g.id(g.target(i)) << ")"; |
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| 80 | std::cout << std::endl; |
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[1530] | 81 | std::cout << std::endl; |
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| 82 | |
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| 83 | std::cout << "There is a map on the edges (length)!" << std::endl; |
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| 84 | std::cout << std::endl; |
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| 85 | for (EdgeIt i(g); i!=INVALID; ++i) |
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[1641] | 86 | std::cout << "length(" << g.id(g.source(i)) << "," |
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| 87 | << g.id(g.target(i)) << ")="<<length[i]<<std::endl; |
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[1530] | 88 | |
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| 89 | std::cout << std::endl; |
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| 90 | |
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[1520] | 91 | } |
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