memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
if (memcached_success(rc))
memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
if (memcached_success(rc))
memcached_server_instance_st instance=
memcached_server_instance_by_position(memc_ptr, 0);
memcached_server_instance_st instance=
memcached_server_instance_by_position(memc_ptr, 0);