Working with files - use in different functions?

[Splatify]

Hi all I'm not too good at working with files, they confuse the hell out of me. However i have this class, let call it test.cpp

#include <iostream>
#include <string>
#include <fstream>
#include <QtGui>
 
using namespace std;
 
 
class test {
 
private:
 
 
public:
    ifstream myfile;
    bool open_file();
    void close_file();
    void next_question();
};
 
bool open_file(){
 
    myfile.open("C:\\test.txt");
    if(myfile.is_open()){
        qDebug() << "Open";
        return true;
    }
    else
    {
        qDebug() << "Error - file not opened";
        return false;
    }
}
 
void close_file(){
 
    myfile.close;
 
}
 
 
void next_line(){
 
    if(open_file()){
 
           // Code here to do stuff with myfile
 
    }
    else
    {
        qDebug() << "File not opened";
    }
 
 
}

#include <iostream>
#include <string>
#include <fstream>
#include <QtGui>

using namespace std;


class test {

private:

    
public:
    ifstream myfile;
    bool open_file();
    void close_file();
    void next_question();
};

bool open_file(){

    myfile.open("C:\\test.txt");
    if(myfile.is_open()){
        qDebug() << "Open";
        return true;
    }
    else
    {
        qDebug() << "Error - file not opened";
        return false;
    }
}

void close_file(){

    myfile.close;

}


void next_line(){

    if(open_file()){

           // Code here to do stuff with myfile

    }
    else
    {
        qDebug() << "File not opened";
    }


}

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The error i keep getting is:

" 'myfile' was not declared in this scope. "

How do i work with myfile across all of my functions within a class?


Thanks for your time and trouble

[Lykurg]

You might want to read about basic C++ stuff such as scopes. It has to be something like

bool test::open_file(){

bool test::open_file(){

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[Zlatomir]

And since you are using Qt you can use QFile

[Splatify]

Thanks for all those who replied. I have got it working now and feel like I have a much better understanding now

Thanks