使用ALT的C++标准库里面的map

// map_sample.cpp : 定义控制台应用程序的入口点。
//

/*
  function : 
  typedef std::map<string,string,uiCmp> setting;

  使用ALT的C++标准库里面的函数，而不是自己写排序函数,for节约时间.
  created : 2014-3-31 by dmd
*/
#include "stdafx.h"

#include <map>
#include <string>
#include <iostream>

using namespace std;

typedef struct tagStudentInfo
{
	int nID;
	string strName;
}StudentInfo, *PStudentInfo; //学生信息

class sort1
{
public:

	bool operator() (StudentInfo const &_A, StudentInfo const &_B) const
	{
		if(_A.nID < _B.nID) 
		{
			return true;
		}
		if(_A.nID == _B.nID) 
		{
				return _A.strName.compare(_B.strName) < 0;
		}
		return false;
	}
};

class sort2
{
public:
	bool operator()(const string&  str1,const string& str2)
	{
		return str1.compare(str2) < 0;
	}
	
};

void test_map_sample1();
void test_map_sample2();
void test_map_sample3();
void test_map_sample4();

int main(int argc, _TCHAR* argv[])
{
	test_map_sample1();
	test_map_sample2();
	test_map_sample3();
	test_map_sample4();
	cin.get();
	return 0;
}

/*
  map_student.insert(pair<int,string>(1,"student1"));
*/
void test_map_sample1()
{
	cout<<" test : map_student.insert(pair<int,string>(1,stringvalue));"<<endl;
	map<int,string> map_student;
	
    map_student.insert(pair<int,string>(1,"student1"));
	map_student.insert(pair<int,string>(1,"student3"));
	map_student.insert(pair<int,string>(39,"student26"));
	map_student.insert(pair<int,string>(41,"student9"));

	map<int, string>::iterator iter;
	cout<<" iter->first = int "<<endl;
	cout<<" iter->second = string "<<endl;

    for(iter = map_student.begin(); iter != map_student.end(); iter++)
    {
      cout<< iter->first <<" = "<< iter->second <<endl;
    }
	cout<<"如果int第一个关键子相同，第二次就不能插入相同关键字的变量"<<endl;
}

/*
  map_student.insert(pair<int,string>(1,"student1"));
  mapStudent.insert(map<int, string>::value_type (1, “student_one”));
*/
void test_map_sample2()
{
	cout<<" test : map_student.insert(map<int,string>::value_type(11,string_value1));"<<endl;
	map<int, string> map_student;
	map_student.insert(map<int,string>::value_type(11,"stu_1"));
	map_student.insert(map<int,string>::value_type(11,"stu_2"));
	map_student.insert(map<int,string>::value_type(33,"stu_3"));
	map_student.insert(map<int,string>::value_type(44,"stu_4"));
	map<int,string>::iterator iter1;
	for(iter1 = map_student.begin(); iter1!= map_student.end(); iter1++)
	{
		cout<< "int value:" <<iter1->first << " string value:"<<iter1->second<<endl;
	}
	cout<<"如果int第一个关键子相同，第二次就不能插入相同关键字的变量"<<endl;
}

/*
 sort
*/
void test_map_sample3()
{
	//用学生信息映射分数
	cout<<"相同ID的时候，名字进行排序"<<endl;

	map<StudentInfo, int, sort1>mapStudent;

	StudentInfo studentInfo;

	studentInfo.nID = 1;

	studentInfo.strName = "BBB";

	mapStudent.insert(pair<StudentInfo, int>(studentInfo, 65));

	studentInfo.nID = 2;

	studentInfo.strName = "DDD";

	mapStudent.insert(pair<StudentInfo, int>(studentInfo, 80));
	
	studentInfo.nID = 2;

	studentInfo.strName = "CCC";

	mapStudent.insert(pair<StudentInfo, int>(studentInfo, 80));

    map<StudentInfo, int, sort1>::iterator iter;
	int i=0;
	for(iter= mapStudent.begin(); iter != mapStudent.end(); iter++)
	{
		//cout<<iter->first <<" :: "<<iter->second <<endl;
		cout<<"NO :"<<i<<endl;
		cout<< iter->first.nID <<endl;
		cout<< iter->first.strName <<endl;
		cout<< iter->second <<endl;
		i++;
	}
}

void test_map_sample4()
{
	//用学生信息映射分数
	cout<<"相同ID的时候，名字进行排序 4 ,此方法最简单"<<endl;
	cout<<"从XML里面获得相同的Key得到的值进行排序"<<endl;

	map<string, int, sort2> mapStudent;
	mapStudent.insert(map<string, int>::value_type("stu_34",11));
	mapStudent.insert(map<string, int>::value_type("stu_2",11));
	mapStudent.insert(map<string, int>::value_type("stu_3",22));
	mapStudent.insert(map<string, int>::value_type("stu_4",22));
	 
	map<string, int, sort2>::iterator iter1;
	for(iter1 = mapStudent.begin(); iter1!= mapStudent.end(); iter1++)
	{
		cout<< "int value:" <<iter1->first << " string value:"<<iter1->second<<endl;
	}
}