how to check the end of file?

This is a discussion on how to check the end of file? within the C++ Programming forums, part of the General Programming Boards category; how to check the end of a txt file?? Code: if(file.eof()){.....} ??? thank you for helping~~~...

  1. #1
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    how to check the end of file?

    how to check the end of a txt file??

    Code:
    if(file.eof()){.....}
    ???


    thank you for helping~~~

  2. #2
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    solved....but

    oh.......that's correct, but how to move back to the begin of file???

  3. #3
    Registered User Bajanine's Avatar
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  4. #4
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    is it the only method?

    well error found cos i think i open the file using

    Code:
    ifstream file(.......)
    is there any other method?

  5. #5
    Registered User Bajanine's Avatar
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    seekg!
    Favorite Quote:

    >For that reason someone invented C++.
    BLASPHEMY! Begone from my C board, you foul lover of objects, before the gods of C cast you into the void as punishment for your weakness! There is no penance for saying such things in my presence. You are henceforth excommunicated. Never return to this house, filthy heretic!



  6. #6
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    thank you but....

    thank you ... i have use the seekg function and i have also use tellg and it said that the position is zero.

    but when i use getline to get the character, the character is empty.

    what is the problem??
    Code:
    if(file7.eof())
    	{						cout << "eof" << endl;				cout << file7.tellg() << endl;
    	file7.seekg(0);
    	file7.getline(RFQ,14);
    	cout << "||" << RFQ << "||" <<endl;
    	file7.seekg(0);
    	cout << file7.tellg() << endl;
    	}
    	if (file7.eof())
    	{
    	cout << "again!!!" << endl;
    	}
    out put:

    eof
    0
    ||||
    0
    again!!

  7. #7
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    Code:
    if(file7.eof())
    	{						cout << "eof" << endl;				cout << file7.tellg() << endl;
    	file7.seekg(0);
    
    Here you could try adding a clear():
    file7.clear();

  8. #8
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    instead of
    file7.seekg(0);

    you could try
    file.seekg(0, ios::beg)

    to explicitly indicate you want to go back to beginning of file.

    Are you sure there is anything in the file?

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