set1.cpp

stl自带源码

/* 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>

int main()
{
    // type of the collection
    typedef std::set<int> IntSet;

    IntSet coll;        // set container for int values

    /* insert elements from 1 to 6 in arbitrary order
     * - value 1 gets inserted twice
     */
    coll.insert(3);
    coll.insert(1);
    coll.insert(5);
    coll.insert(4);
    coll.insert(1);
    coll.insert(6);
    coll.insert(2);

    /* print all elements
     * - iterate over all elements
     */
    IntSet::const_iterator pos;
    for (pos = coll.begin(); pos != coll.end(); ++pos) {
        std::cout << *pos << ' ';
    }
    std::cout << std::endl;
}