一个统计文件字数的小程序

#ifndef WORD_COUNT_H_INCLUDED#define WORD_COUNT_H_INCLUDED#include<iostream>#include<vector>#include<string>#include<algorithm>#include<numeric>#include<fstream>#include<sstream>using namespace std;class word_count{private:    vector<string> all_lines;    vector<string> all_words;    void delete_same_words();    void get_all_lines(char *s);    void get_all_words();public:    void get_allwords(int n,char *s);};bool GT6(const string hs){    return hs.size()>6;}bool my_com(const string & lhs,const string &rhs){    return lhs.size()<rhs.size();}void word_count::get_all_lines(char *s){    ifstream inf(s);    string str;    while(getline(inf,str))    {        all_lines.push_back(str);    }    inf.close();}void word_count::get_all_words(){    string str;    int all_lines_size=all_lines.size();    for(int i=0;i<all_lines_size;i++)    {        istringstream inf(all_lines[i]);        while(inf>>str)            all_words.push_back(str);    }}void word_count::get_allwords(int n,char *s){    this->get_all_lines(s);    this->get_all_words();    vector<string>::iterator it_end=unique(all_words.begin(),all_words.end());    all_words.erase(it_end,all_words.end());    stable_sort(all_words.begin(),all_words.end(),my_com);    int total_num=0;    /*    for(vector<string>::iterator it=all_words.begin();it != all_words.end();it++)    {        if(it->size() > 6)        {            cout<<*it<<endl;        }    }    */    for(vector<string>::iterator it=all_words.begin();it != all_words.end();it++)    {        it=find_if(it,all_words.end(),GT6);        cout<<*it<<endl;        total_num++;    }    cout<<"the count > 6 is :"<<total_num<<endl;}#endif // WORD_COUNT_H_INCLUDED

#include <iostream>#include "word_count.h"using namespace std;int main(){    word_count wc;    char *s="text.txt";    wc.get_allwords(6,s);    return 0;}