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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
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<a href="../index-2.html">cppreference.com</a> > <a href=
"index.html">C++ Multimaps</a> > <a href=
"insert.html">insert</a>
</div>
<div class="name-format">
insert
</div>
<div class="syntax-name-format">
Syntax:
</div>
<pre class="syntax-box">
#include <map>
iterator insert( iterator pos, const <a href=
"../containers.html">TYPE</a>& val );
iterator insert( const <a href=
"../containers.html">TYPE</a>& val );
void insert( <a href=
"../iterators.html">input_iterator</a> start, <a href=
"../iterators.html">input_iterator</a> end );
</pre>
<p>The function insert() either:</p>
<ul>
<li>inserts <em>val</em> after the element at <em>pos</em> (where
<em>pos</em> is really just a suggestion as to where <em>val</em>
should go, since multimaps are ordered), and returns an iterator
to that element.</li>
<li>inserts <em>val</em> into the multimap, returning an iterator
to the element inserted.</li>
<li>inserts a range of elements from <em>start</em> to
<em>end</em>.</li>
</ul>
<p>For example, the following code uses the insert() function to add
several <name,ID> pairs to a employee multimap:</p>
<pre class="prettyprint">
multimap<string,int> m;
int employeeID = 0;
m.insert( pair<string,int>("Bob Smith",employeeID++) );
m.insert( pair<string,int>("Bob Thompson",employeeID++) );
m.insert( pair<string,int>("Bob Smithey",employeeID++) );
m.insert( pair<string,int>("Bob Smith",employeeID++) );
cout << "Number of employees named 'Bob Smith': " << m.count("Bob Smith") << endl;
cout << "Number of employees named 'Bob Thompson': " << m.count("Bob Thompson") << endl;
cout << "Number of employees named 'Bob Smithey': " << m.count("Bob Smithey") << endl;
cout << "Employee list: " << endl;
for( multimap<string, int>::iterator iter = m.begin(); iter != m.end(); ++iter ) {
cout << " Name: " << iter->first << ", ID #" << iter->second << endl;
}
</pre>
<p>When run, the above code produces the following output:</p>
<pre class="prettyprint">
Number of employees named 'Bob Smith': 2
Number of employees named 'Bob Thompson': 1
Number of employees named 'Bob Smithey': 1
Employee list:
Name: Bob Smith, ID #0
Name: Bob Smith, ID #3
Name: Bob Smithey, ID #2
Name: Bob Thompson, ID #1
</pre>
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