problem occur during imput from a file

[kuwingto]

I would like to ask why does the last word in the input file will appear twice in the standard output? Below is my code. Please help. Thank you.

#include<iostream>
#include<fstream>
#include<vector>
#include<string>

using namespace std;

void fileinput(vector<string> & v)
{
ifstream input("afile.txt");
string word;

if(!input)
cout << "cannot read from files";


while(!input.eof()){

input>>word;
v.push_back(word);
}
input.close();
}

int main()
{
vector<string> v0;
fileinput(v0);

auto b=v0.cbegin();
auto e=v0.cend();

for (auto it=b; it!=e;++it)
cout<<*it<<endl;

return 0;
}

[Peter87]

http://www.parashift.com/c++-faq/istream-and-eof.html