Code:
cout<< "Insert the maximum number of hops of the routing algorithm used  :";
  cin>> num_of_hops;
  cout << endl << "number of paths : " << num_of_paths << endl;
int path_matrix[][];
 path_matrix[num_of_paths][num_of_hops + 1];
float path_length[];  // The total length of each path
 path_length[num_of_paths];
error C2057: expected constant...