C++ 用set容器过滤插入到map容器中的元素

void filter_insert_map(ifstream& filter_file,map<string,int>& strcount){    set<string> set_str;    string filterword;    while(filter_file>>filterword)        set_str.insert(filterword);        for(set<string>::iterator iter=set_str.begin();            iter!=set_str.end();            ++iter)        cout<<*iter<<endl;   string word;   while(cin>>word)       if(!set_str.count(word))           ++strcount[word];    }int main(int argc, const char *argv[]){        ifstream filter_file;    string ignorefilename("ignore.txt");    filter_file.close();    filter_file.clear();    filter_file.open(ignorefilename.c_str());    cout<<"The filter words are"<<endl;    string tmp;    while(filter_file>>tmp)        cout<<tmp<<endl;        map<string,int> strcount;    cout<<"Please insert the string of map"<<endl;    filter_insert_map(filter_file,strcount);       map<string,int>::iterator iter=strcount.begin();    while(iter!=strcount.end())    {        cout<<iter->first<<" occur "<<iter->second<<" times "<<endl;        ++iter;    }    system("pause");    return 0;}The filter words are123456789abcdefhijPlease insert the string of mapabcdefhij999888777666aaabbb ccc ddd eee fff12312^Z12312 occur 1 times666 occur 1 times777 occur 1 times888 occur 1 times999 occur 1 timesaaa occur 1 timesabc occur 1 timesbbb occur 1 timesccc occur 1 timesddd occur 1 timesdef occur 1 timeseee occur 1 timesfff occur 1 timeshij occur 1 times请按任意键继续. . .