getline function not working

Can someone please tell me which header to use for using getline() in C++. I have used

Code:

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#include<iostream>
#include<string>
#include<stdio.h>
#include<stdlib.h>
using namespace std;

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none of them seem to be working.

Here is the entire code that I have written so far

Code:

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#include "stdafx.h"
#include<iostream>
#include<string>
#include<vector>
#include<set>
#include<map>
using namespace std;

class TextQuery
{
    typedef map<string, set<string::size_type> > word_map;
    TextQuery(ifstream &file)
    {
        FillLineVector(file);
        BuildMap(file);
    }

    void query(string);
private:
    word_map map;
    vector<string> LineVector;
    void FillLineVector(const ifstream&);
    void BuildMap(const ifstream&);
};

void TextQuery::FillLineVector(const ifstream& file)
{
    string line;
    while(getline(file,line)); //error:getline identifier not found
}

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Code:

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#include <string>

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Kurt

Try removing the const

Code:

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void TextQuery::FillLineVector(ifstream& file)

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Quote:

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Originally Posted by oogabooga

Try removing the const

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Still not working. Got a whole new bunch of errors

Code:

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'std::basic_istream<_Elem,_Traits> &std::getline(std::basic_istream<_Elem,_Traits> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'std::basic_istream<_Elem,_Traits> &' from 'std::ifstream'
'std::basic_istream<_Elem,_Traits> &std::getline(std::basic_istream<_Elem,_Traits> &,std::basic_string<_Elem,_Traits,_Alloc> &,const _Elem)' : expects 3 arguments - 2 provided

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I don't know what to tell you. This works:

Code:

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

void func(ifstream& file) {  // doesn't work with const, though
    string line;
    while (getline(file,line))
        cout << line << '\n';
}

int main() {
    ifstream fin("data.txt");
    func(fin);
}

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Quote:

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Originally Posted by oogabooga

I don't know what to tell you. This works

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He is missing the

Code:

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#include <fstream>

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Kurt