How to devide post into more than one page using ?

by

The function you’re looking for is wp_link_pages(). Default usage below:

wp_link_pages( 
    array(
        'before'           => '<p>' . __('Pages:'),
        'after'            => '</p>',
        'link_before'      => '',
        'link_after'       => '',
        'next_or_number'   => 'number',
        'nextpagelink'     => __('Next page'),
        'previouspagelink' => __('Previous page'),
        'pagelink'         => '%',
        'echo'             => 1
    )
)

You can read the documentation here: http://codex.wordpress.org/Function_Reference/wp_link_pages