[igraph] Fwd: Deleting edges randomly in Igraph C

[Ashwin Venkateshan]

Dear Sir/ Madam,

I am writing to you in regard with a query. I am trying to randomly delete edges of a random network(Erdos Renyi) using Igraph C. I am using Cywing on windows and gcc & g++ as the compilers. I have scoured through forums and I am not sure where I am going wrong. I have attached the code. This is for a personal project. Any advice is appreciated.

Thank you,

Sincerely,

Ashwin

#include <stdio.h>
#include <igraph/igraph.h>

int main() {

int edgeCount=0;
igraph_t g;
igraph_vector_t v;

igraph_vector_t edges;
igraph_vector_init(&edges,0);

igraph_vector_t indices;
igraph_vector_init(&indices, 0);

igraph_erdos_renyi_game(&g, IGRAPH_ERDOS_RENYI_GNP, 500, .10,IGRAPH_UNDIRECTED, IGRAPH_NO_LOOPS); // Create a random graph

igraph_get_edgelist(&g, &edges, 0); // Put the graph's list of indices in "edges"
 int r = rand() % ((int)igraph_ecount(&g)); // Get a random edge index


igraph_vector_push_back(&indices, r); // create a vector of size 1 in which to put the random index found above

 igraph_delete_edges(&g, igraph_es_vector(&indices)); // Delete that edge

 return igraph_ecount(&g);
}