Check if a page is a parent or if it's a child page?

Question

Is it possible to check if a page is a parent or if it\'s a child page?

I have my pages set up like this:

-- Parent

---- Child page 1

---- Child

Answer 1

You can test if the post is a subpage like this:
*(from http://codex.wordpress.org/Conditional_Tags)*

post_parent ) {
    // This is a subpage

} else {
    // This is not a subpage
}
?>