STL map的问题

[darkarthur]

#include <iostream>
#include <map>
#include <string>
using namespace std;
void main ()
{
	string input;
	typedef map<string, int> StrIntMap;
	StrIntMap ma;
	long i = 0;
	while (cin>>input && input != "fuck")
	{
		ma[input] = i;
	}
	
	map<string, int>::iterator pos1;
	map<string, int>::iterator pos2;

	for (pos1 = ma.begin(); pos1 != ma.end(); pos1++)
	{
		for (pos2 = ma.begin(); pos2 != ma.end(); pos2++)
		{
			if (pos1->first == pos2->first)    ++i;
		}
		ma[pos1->first] = i;
		i = 0;
	}

	for (pos1 = ma.begin(); pos1 != ma.end(); pos1++)
	{
		cout<<pos1->first<<" "<<pos1->second<<"\n";
	}	
}

我的代码是这样的
输出的时候i的值永远都是1
调试的时候pos1->first的值不能看到
初学习STL 问题很多 = =

[darkarthur]

是我把map的概念和multimap的概念混淆了
最后我实现的程序是这样的 谢谢大家的说

#include <iostream>
#include <map>
#include <string>
using namespace std;
void main ()
{
	string input;
	map<string, int> ma;
	while (cin>>input && input != "fuck")
	{
		ma[input]++;
	}
	map<string, int>::reverse_iterator it=ma.rbegin();
	cout<<(*it).first<<" "<<(*it).second<<endl;
}

[xalangying]

因为map对key相等的值只能保留一个，你应该把你程序的map改为mulset或改成以下这样就能实现你想要的功能

#include <iostream>
#include <map>
#include <string>
using namespace std;
void main ()
{
    string input;
    typedef map<string, int> StrIntMap;
    StrIntMap ma;
    long i = 0;
    while (cin>>input && input != "fuck")
    {
        ma[input]++;
    }
    map<string, int>::iterator pos1;
    for (pos1 = ma.begin(); pos1 != ma.end(); pos1++)
    {
        cout<<pos1->first<<" "<<pos1->second<<"\n";
    }    
}

[xalangying]

修正，楼上的mulset应为 multimap

[yydrewdrew]

题外：pos1++最好写成++pos1

[yydrewdrew]

题外：pos1++最好写成++pos1