[question] ifstream read file, thanks!

---------------------------------------------
My config.ini content:
c:\program\edit plus\editplus.exe
---------------------------------------------

Abnormal Output: c:\program\editplus\editplus.exe [the blank missed between edit AND plus?]

Code:

---

#include "stdafx.h"
#include <iostream>
#include <fstream>

using namespace std;

void main() //the program starts here
{
       
        ifstream OpenFile("config.ini");
        char ch[80];
                int i;
        while(!OpenFile.eof())
        {
        OpenFile >> ch;
        cout << ch;
        }
        cout << endl;
        OpenFile.close();

        cin >> i;
}

---

Abnormal output: c:\program\edit plus\editplus.exee (double e)
Why ?

Code:

---

#include "stdafx.h"
#include <iostream>
#include <fstream>

using namespace std;

void main() //the program starts here
{
       
        ifstream OpenFile("config.ini");
        char ch;
        int i;
        while(!OpenFile.eof())
        {
        OpenFile.get(ch);
        cout << ch;
        }
        cout << endl;
        OpenFile.close();

        cin >> i;
}

---

Because eof is not set until the last character has been read AND you have attempted to read the next one. Change your code to test the success of the read itself, e.g.

Code:

---

while(OpenFile >> ch)
{
...
}

---

Then you won't process a character AFTER eof has been reached.

--
Mats

Great!
i test as your said, more simple code.

thanks again!

-------------------------------------------------------------

And i test more carefully, i find new issue.
The BLANK SPACE between edit AND plus missed ? I comment at the 1st floor.

I can't find a right way to read this folder path which including a BLANK SPACE.
i tried the function, it is the same result.

Code:

---

while(OpenFile >> ch)
{
...
}

---

There is someting wrong?
How to read BLANK places with ifstream?
Any more suggestion, thanks!

To read in text with spaces you would generally use getline instead of operator >>.

I'd suggest using the version that works with the string class, and switching to use the string class instead of C style strings, but there is a version of getline that works either way.

Get it.
Very appreciated for above of your kindly help!

-------------------------

Code:

---

#include "stdafx.h"

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

using namespace std;

int main ()
{
  string strInfo;
  int i;

  ifstream OpenFile ("config.ini");
  if (OpenFile.is_open())
  {
    while ( ! OpenFile.eof())
    {
      getline (OpenFile, strInfo);
      cout << strInfo << endl;
    }
    OpenFile.close();
        cin >> i;
  }else
    cout << "Unable to open file";

  return 0;
}

---

Code:

---

while ( ! OpenFile.eof())
{
    getline (OpenFile, strInfo);
    cout << strInfo << endl;
}

---

That's still incorrect for the same reason matsp mentioned previously. Replace the eof test in the while loop's conditional with the getline call itself.

Code:

---

while ( getline(OpenFile, strInfo) )
{
    cout << strInfo << endl;
}

---

In general, there seem to be few instances where an eof test in the conditional part of a loop is done correctly.

:-) . thank you!
So far i really enjoyed from the case!