=====lower_bound=====
Syntax:

<code>
    #include <set>
    iterator lower_bound( const key_type& key );
    const_iterator lower_bound( const key_type& key ) const;
</code>

The lower_bound() function returns an iterator to the first element which has a
value greater than or equal to key.

lower_bound() runs in [[/complexity|logarithmic time]].

Related Topics: [[upper_bound]]