set: lower_bound, upper_bound, equal_range : set bound range « set multiset « C++ Tutorial

1. C++ Tutorial
2. set multiset
3. set bound range

/* The following code example is taken from the book
 * "The C++ Standard Library - A Tutorial and Reference"
 * by Nicolai M. Josuttis, Addison-Wesley, 1999
 *
 * (C) Copyright Nicolai M. Josuttis 1999.
 * Permission to copy, use, modify, sell and distribute this software
 * is granted provided this copyright notice appears in all copies.
 * This software is provided "as is" without express or implied
 * warranty, and with no claim as to its suitability for any purpose.
 */
#include <iostream>
#include <set>
using namespace std;

int main ()
{
    set<int> c;

    c.insert(1);
    c.insert(2);
    c.insert(4);
    c.insert(5);
    c.insert(6);

    cout << "lower_bound(3): " << *c.lower_bound(3) << endl;
    cout << "upper_bound(3): " << *c.upper_bound(3) << endl;
    cout << "equal_range(3): " << *c.equal_range(3).first << " "
                               << *c.equal_range(3).second << endl;
    cout << endl;
    cout << "lower_bound(5): " << *c.lower_bound(5) << endl;
    cout << "upper_bound(5): " << *c.upper_bound(5) << endl;
    cout << "equal_range(5): " << *c.equal_range(5).first << " "
                               << *c.equal_range(5).second << endl;
}

lower_bound(3): 4
upper_bound(3): 4
equal_range(3): 4 4

lower_bound(5): 5
upper_bound(5): 6
equal_range(5): 5 6