再看一边C++primer 5.1.4

/*************************************************************************
	> File Name: test.cpp
	> Author:keson 
	> Mail:[email protected] 
	> Created Time: 2014年12月10日 星期三 20时47分34秒
 ************************************************************************/

#include<iostream>
#include<vector>
#include<fstream>
using namespace std;

int main()
{
    string word;
    string currword;
    int currcnt=0;
    string result;
    int resultcnt;
    
    cin>>currword;
    result=currword;
    resultcnt=currcnt=1;
  
    while(cin>>word)
    {
        if(word==currword)
         {
             ++currcnt;
             if(currcnt>resultcnt)
             {
                 result=currword;
                 resultcnt=currcnt;
             }
         }
        else 
        {
            currword=word;
            currcnt=1;
        }

    }
    cout<<endl;
    cout<<result<<" exist: "<<resultcnt<<"times"<<endl;
}