C++primer 9.49

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


void find_max(vector<string>&vec)
{
	string s1 = "bdfhjlkpq";
	vector<string>::iterator it1 = vec.begin();
	string s = "";
	unsigned max = 0;

	while (it1 != vec.end())
	{
		if ((*it1).find(s1)==string::npos)
			if (max < (*it1).size())
			{
				max = (*it1).size();
				s = *it1;
			}
		it1++;
	}

	cout << s << endl;
}


int main()
{
	ifstream in("words.txt");
	string word;
	vector<string>vec;
	while(in >> word)
	   vec.push_back(word);
	
	find_max(vec);

	return 0;
}