STL案例员工分组，随机数，把键对应的所有value输出

#include<iostream>
using namespace std;
#include<map>
#include<vector>
#include<ctime>

#define CeHua 0
const int MeiShu = 1;
#define YanFa 2
//员工分组

class Worker
{
public:
	string m_Name;
	int m_Salary;//工资
};
void creatWorker(vector<Worker>&v)
{
	string nameSeed = "ABCDEFGHIJ";
	for (int i = 0; i < 10; i++)
	{
		Worker p;
		p.m_Name = "员工";
		p.m_Name += nameSeed[i];
		p.m_Salary = rand() % 10000 + 10000;//生成10000-19999的随机数
		//p.m_Salary = rand() % 100001 + 10000;//生成10000-20000的随机数
		v.push_back(p);
	}
}

//员工分组
void setGroup(vector<Worker>& v, multimap<int, Worker>& m)
{
	for (vector<Worker>::iterator it = v.begin(); it != v.end(); it++)
	{
		//产生随机部门编号
		int deptId = rand() % 3;//产生0-2的随机数
		//将员工插入到分组中
		//key是部门编号，value是具体员工
		m.insert(pair<int, Worker>(deptId, *it));
	}
}
void showWorkerByGroup(multimap<int, Worker>&m)
{
	cout << "策划部门：" << endl;
	//怎么把策划部门的人都打出来呢？
	//因为我们的key是升序排列的，所以可以
	multimap<int, Worker>::iterator be,en;
	be = m.find(CeHua);
	en = m.find(MeiShu);
	//第一种方式
	for (;be!=en;be++)
	{
		cout << "姓名：" << be->second.m_Name << " 薪水：" << be->second.m_Salary << endl;
	}
	//第二种方式
	be = m.find(CeHua);
	int num = m.count(CeHua);//统计策划部门具体人数
	int index = 0;
	for (; be != m.end() && index < num; be++, index++)
	{
		cout << "姓名：" << be->second.m_Name << " 薪水：" << be->second.m_Salary << endl;
	}
	
	cout << "--------------------------------" << endl;
	//美术部门
	cout << "美术部门：" << endl;
	be = m.find(MeiShu);
	en = m.find(YanFa);
	//第一种方式
	for (; be != en; be++)
	{
		cout << "姓名：" << be->second.m_Name << " 薪水：" << be->second.m_Salary << endl;
	}
	//第二种方式
	be = m.find(MeiShu);
	num = m.count(MeiShu);//统计策划部门具体人数
	index = 0;
	for (; be != m.end() && index < num; be++, index++)
	{
		cout << "姓名：" << be->second.m_Name << " 薪水：" << be->second.m_Salary << endl;
	}

	cout << "--------------------------------" << endl;
	//美术部门
	cout << "研发部门：" << endl;
	be = m.find(YanFa);
	//第一种方式
	for (; be != m.end(); be++)
	{
		cout << "姓名：" << be->second.m_Name << " 薪水：" << be->second.m_Salary << endl;
	}
	//第二种方式
	be = m.find(YanFa);
	num = m.count(YanFa);//统计策划部门具体人数
	index = 0;
	for (; be != m.end() && index < num; be++, index++)
	{
		cout << "姓名：" << be->second.m_Name << " 薪水：" << be->second.m_Salary << endl;
	}
}
int main()
{
	//随机数种子
	srand((unsigned int)time(NULL));
	//创建员工
	vector<Worker>vWorker;
	creatWorker(vWorker);
	////测试
	//for (vector<Worker>::iterator it = vWorker.begin(); it != vWorker.end(); it++)
	//{
	//	cout << it->m_Name << " " << it->m_Salary << endl;
	//}
	// 
	//2.员工分组
	multimap<int, Worker>mWorker;//key值部门编号
	setGroup(vWorker, mWorker);
	
	//3.分组显示员工
	showWorkerByGroup(mWorker);
	system("pause");//按任意键继续
	return 0;
}