[ns] How to write an arbitrary variable to file

[Nem Vagabon]

Hi there,

I added this piece of code to the file god.cc in order to count the number
of neighbors each node in a wireless ad hoc network has. However, I can not
figure out how to write the array which contains this information to a log
file any time inside the simulation period. Could you please guide me how to
do this? In this case, I need to write the array "neighbors" returned by
function countNeighbors() to a file.

Thank you very much.

/////////////////////////////////////////////////
// Count the number of neighbors for all nodes //
/////////////////////////////////////////////////
int *God::countNeighbors()
{
    int curNode, otherNode;
    int *neighbors = (int *)calloc(num_nodes, sizeof(int)); //this array
contains the number of neighbors for each node

    for (curNode = 0; curNode < num_nodes; curNode++)
    {
        if (mb_node[curNode] -> X() < 0 || mb_node[curNode] -> Y() < 0) //if
this node lies out of simulation range
        {
            *(neighbors + curNode) = 0;
            continue; //proceed to the next node
        }
        for (otherNode = 0; otherNode < num_nodes; otherNode++)
        {
            if (otherNode == curNode)
                continue;
            if (mb_node[otherNode] -> X() < 0 || mb_node[otherNode] -> Y() <
0)
            {
                continue; //proceed to the next node
            }
            if (IsNeighbor(curNode, otherNode))
            {
                *(neighbors + curNode) += 1;
            }
        }
    }
    return neighbors;
}
// End of function
/////////////////////////////////////////////////
/////////////////////////////////////////////////