Changeset 191:abc5b9d0c67e in lemon-main for demo/lgf_demo.cc
- Timestamp:
- 07/05/08 17:22:28 (16 years ago)
- Branch:
- default
- Phase:
- public
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
demo/lgf_demo.cc
r164 r191 21 21 ///\brief Demonstrating graph input and output 22 22 /// 23 /// This program gives an example of how to load a directed graph from24 /// an \ref lgf-format "LGF" file with the \ref lemon::DigraphReader25 /// "DigraphReader" class.23 /// This program gives an example of how to read and write a digraph 24 /// and additional maps from/to a stream or a file using the 25 /// \ref lgf-format "LGF" format. 26 26 /// 27 27 /// The \c "digraph.lgf" file: 28 28 /// \include digraph.lgf 29 29 /// 30 /// And the program which reads it: 30 /// And the program which reads it and prints the digraph to the 31 /// standard output: 31 32 /// \include lgf_demo.cc 32 33 … … 35 36 #include <lemon/lgf_reader.h> 36 37 #include <lemon/lgf_writer.h> 37 #include <lemon/random.h>38 39 38 40 39 using namespace lemon; … … 44 43 SmartDigraph::ArcMap<int> cap(g); 45 44 SmartDigraph::Node s, t; 45 46 try { 47 digraphReader("digraph.lgf", g). // read the directed graph into g 48 arcMap("capacity", cap). // read the 'capacity' arc map into cap 49 node("source", s). // read 'source' node to s 50 node("target", t). // read 'target' node to t 51 run(); 52 } catch (DataFormatError& error) { // check if there was any error 53 std::cerr << "Error: " << error.what() << std::endl; 54 return -1; 55 } 46 56 47 digraphReader("digraph.lgf", g). // read the directeg graph into g 48 arcMap("capacity", cap). // read the 'capacity' arc map into cap 49 node("source", s). // read 'source' node to s 50 node("target", t). // read 'target' node to t 51 run(); 52 53 std::cout << "Digraph read from 'digraph.lgf'" << std::endl; 57 std::cout << "A digraph is read from 'digraph.lgf'." << std::endl; 54 58 std::cout << "Number of nodes: " << countNodes(g) << std::endl; 55 59 std::cout << "Number of arcs: " << countArcs(g) << std::endl;
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