Nodes input

Reading the nodes file would go as follows:

{}
#include <fstream>
#include <string>
...
const char* NODES_FILE_NAME = "T.nodes";
...
class Node { 
    ...
};
...
class SimWorld {
    ...
};
...

/home/nagel/src/book/sim/book/SimWorld::readNodes

The convert methods are as follows:

/home/nagel/src/book/sim/book/convert

This would be called from the main program via

{}
int main()
{       
        SimWorld simWorld ;
        simWorld.readNodes() ;
        ...
}

Task 6.2   Write a program which reads the node data.