#include <set>

#include <iostream>

using namespace std;

struct Student

{

	char *name;

	int year;

	char *addr;

};

void find_test()

{

	multiset<int> ms;

	ms.insert(10);

	ms.insert(11);

	ms.insert(12);

	ms.insert(13);

	ms.insert(14);

	ms.insert(15);

	ms.insert(16);

	ms.insert(17);

	ms.insert(18);

	ms.insert(13);

	ms.insert(19);

	//find the element 13

	int v = 19;

	multiset<int>::iterator i_v = ms.find(v);

	cout<<*i_v<<endl;

	//equal_range search the element 13

	v = 13;

	pair<multiset<int>::iterator , multiset<int>::iterator> p = ms.equal_range(v);

	cout<<"大于等于"<<v<<"的第一个元素为（x>=k）为 "<<*p.first<<endl;

	cout<<"大于"<<v<<"的第一个元素（x>k）为 "<<*p.second<<endl;

	//打印重复键值元素13

	multiset<int>::iterator i;

	cout<<"键值为 "<< v <<"的所有元素为 ";

	for (i = p.first; i!=p.second; i++)

	{

		cout<<*i<<' ';

	}

	cout<<endl;

	cout<<endl;

}

//比较函数

struct StudentLess

{

	bool operator()(const Student &s1, const Student &s2)const

	{

		return (s1.year) < (s2.year) ;

	}

};

void other_multiset()

{

	Student stuArray[] =

	{

		{" 李强", 21, "北京"},

		{" 月月", 23, "西安"},

		{" 大力", 21, "美国"},

		{" 小二", 22, "南非"},

		{" 小明", 23, "日本"},

	};

	//create a object of multiset

	multiset<Student, StudentLess>ms(stuArray, stuArray+5, StudentLess());

	//count

	cout<<"学生人数： "<<ms.size()<<endl<<endl;

	cout<<"年龄为21岁的学生人数"<<ms.count(stuArray[0])<<endl<<endl;

	//print all

	//multiset<Student>::iterator i, iend;//报错！！！

	//<c++ STL开发技术导引>上的代码是这么写的，vs2010报错，和下面的迭代器类型不同

	multiset<Student, StudentLess>::iterator i, iend;

	iend=ms.end();

	cout<<"姓名    " <<"年龄    "<<"地址    \n";

	for (i=ms.begin(); i!=iend; i++)

	{

		cout<<(*i).name<<"    "<<(*i).year<<"    "<<(*i).addr<<"    "<<endl;

	}

	cout<<endl;

}

int main()

{

	find_test();

	other_multiset();

	getchar();

	return 0;

}

结果：

下面链接是当时出现的问题：

http://bbs.csdn.net/topics/390724469?page=1#post-396890764