[igraph] graph components

[zhengjun chen]

Hi,

I want to calculate the number of components in an undirected graph. 

I use the function in such way: 

igraph_integer_t num; // it is used to store the number of components

igraph_clusters(&graph,NULL,&clusters,&num,IGRAPH_WEAK);  

printf("number of components: %d\n",num);

But it always shows "number of components is: 0". Actually the number of components in my graph is two.

--
Thanks
zhengjun

Graduate research assistant
Dept of Computer Science and Engineering
Lehigh University