Compile threshold.cc in NS2

In ns2, if you want to calculate the receiving power threshold of a node, you may want to use threshold tool which has been integrated in ns2 source code.

I don`t know why the threshold.cc is not compiled in the new version of ns2 like ns-allinone-2.35. So we have to do it by ourselves. In ubuntu, if you try to do "gcc threshold.cc", you will get an error message of "<iostream.h>".

So, we replace this line "#include<iostream.h>" by

#include<iostream>

#include<cstring>

using namespace std;

Then, compile it with g++,

g++ threshold.cc -o threshold