[igraph] Functions

[Ragia Ibrahim]

Hi,

I used to write C++ code. write what i want in a function ..pass pointers if i want to change the object real value...
here i want to ask........
in R, igraph....should i write the script as lines without functions..to change graph attributes or edges attributes or some values of the nodes ?
should i pass copy of the graph each time i write a function ?
how should the program looks like? 


thanks in advance
Ragia