记录单词个数

#include <iostream>

#include <map>

#include <string>

using namespace std;

int main()

{

map<string,int> word_count;

string word;

while(cin>>word)

{

pair<map<string,int>::iterator,bool> ret;

ret=word_count.insert(make_pair(word,1));

if(!ret.second)

{

++ret.first->second;

}

}

system("pause");

return 0;

}