more help with writing C++ functions for Octave

[Karen L. Kalat]

I have a function successfully compiled that uses a C library 
of my own. Now I'm trying to figure out how to "cast" octave-type variables
to values with datatypes I can pass to my C functions.
For example:
If I read in a bunch of things in args how do I get a char* 
out of arg(0)? 

octave:1> myfunction("charstring")

Karen Kalat
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