Changeset - r193:65cba1032f90
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alpar (Alpar Juttner)
alpar@cs.elte.hu
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1 file changed with 10 insertions and 4 deletions:
demo/lgf_demo.cc
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demo/lgf_demo.cc
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///\brief Demonstrating graph input and output
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///
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/// This program gives an example of how to load a directed graph from
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/// an \ref lgf-format "LGF" file with the \ref lemon::DigraphReader
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/// "DigraphReader" class.
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/// This program gives an example of how to read and write a digraph
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/// and additional maps from/to a stream or a file using the
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/// \ref lgf-format "LGF" format.
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///
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/// The \c "digraph.lgf" file:
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/// \include digraph.lgf
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///
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/// And the program which reads it:
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/// And the program which reads it and prints the digraph to the
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/// standard output:
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/// \include lgf_demo.cc
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  SmartDigraph::Node s, t;


			




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  try {


			




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  digraphReader("digraph.lgf", g). // read the directed graph into g


			




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    arcMap("capacity", cap).       // read the 'capacity' arc map into cap


			




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    node("target", t).             // read 'target' node to t


			




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    run();


			




	
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  } catch (DataFormatError& error) { // check if there was any error


			




	
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    std::cerr << "Error: " << error.what() << std::endl;


			




	
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    return -1;


			




	
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  }


			




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  std::cout << "A digraph is read from 'digraph.lgf'." << std::endl;


			




        

    






    
    



    


    

     
    
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