#include  <iostream> 
#include <set> 
#include <fstream>  
#include <vector> 
#include <string> 
using namespace std;  
 
string Keys_path="keywords.txt"; 
string ling="ling_filenames.txt";  
string spam="spam_filenames.txt"; 
 
vector <string> words()  
{ 
vector <string> Keys; 
string word; 
ifstream keysfile  (Keys_path.c_str()); 
while (keysfile>>word) 
Keys.push_back(word);  
return Keys; 
} 
 
void Check (vector <string> keywords,  string file, int c) 
{ 
void CheckFile(vector <string> Kwords,  string TFile); 
string word; 
int i; 
vector <string> AllFiles;  
ifstream files(file.c_str()); 
while (files>>word)  
AllFiles.push_back(word); 
for (i=0; i<AllFiles.size(); i++) {  
CheckFile(keywords, AllFiles[i]); 
// cout<< 
} 
}  
 
void CheckFile(vector <string> Kwords, string TFile) 
{ 
set  <string> txt; 
int i; 
string word, a; 
ifstream x  (TFile.c_str()); 
while (x>>word) 
txt.insert(word); 
for(i=0;  i<Kwords.size(); i++) 
{ 
a=Kwords[i]; 
if(txt.find(a)!=txt.end()) {  
cout<<
} 
} 
} 
 
void CountLines (vector <string>  Kwords, string TFile)
{
set <string> text;
int i;
int  n=0;
ifstream files(ling.c_str());
while (files>>line)  {
AllFiles.push_back(line);
}
for(i=0; i<AllFiles.size();  i++)
n++;
ifstream files2(spam.c_str());
while (files2>>line)  {
AllFiles2.push_back(line);
}
for(i=0; i<AllFiles2.size();  i++)
n++;
return n;
}
 
 
int main() 
{ 
vector  <string> Keywords=words(); 
int c=0;
int  FeatureNumbers=0;
Check(Keywords,ling,c); 
c++;  
Check(Keywords,spam,c);
return 0; 
}

if(txt.find(a)!=txt.end()) {  
cout<<
}