#define NCAMERA 2

bool enableSrv(const char **name, int name_len, std::string srvName)
{
    ros::ServiceClient client;
    webots_ros::set_int srv;
    const char *name_ = NULL;
    name_ = *name++;
    for (int i = 0; i < name_len; i++)
    {
        //请求服务 superMarketRobot/kinect_xxx_color/enable
        client = n->serviceClient<webots_ros::set_int>(ROS_NODE_NAME + std::string("/") + name_ + srvName);
        srv.request.value = 64;
        if (client.call(srv) && srv.response.success)
            ROS_INFO("[%s] succeed...", srvName.c_str());
        else
        {
            ROS_ERROR("[%s] failed...", srvName.c_str());
            return false;
        }
        ROS_INFO("name_ = %s\n", name_);
        name_ = *name;
    }
    return true;
}

int main()
{
	const char *cameraNames[NCAMERA] = {"camera_front", "camera_behind"};
	enableSrv(cameraNames, NCAMERA, std::string("/enable"));
}

参考：
[1] C 函数参数 char **s与char s[]
[2] C语言中p++ ，(p)++ ，++p ，++*p的区别