请问如何才能使用STL中的map

[gajici]

我不知道map的索引是字符串时该怎么办

[bluebohe]

// map.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#pragma warning(disable:4786)
#pragma warning(disable:4251)
#pragma warning(disable:4273)

#include <map>
using namespace std;
struct ltstr
{
bool operator()(const char* s1, const char* s2) const
{
return strcmp(s1, s2) < 0;
}
};

int main(int argc, char* argv[])
{

map<const char*, int, ltstr> months;
months["january"] = 31;
months["february"] = 28;
months["march"] = 31;
months["april"] = 30;
months["may"] = 31;
months["june"] = 30;
months["july"] = 31;
months["august"] = 31;
months["september"] = 30;
months["october"] = 31;
months["november"] = 30;
months["december"] = 31;
map<const char*, int, ltstr>::size_type st = months.size();
int i=months["january"];
i=months["february"];
months.clear();
return 0;
}

[gajici]

多谢！

[gajici]

多谢！