File is not opening even though it exists

Question

In the following program, it writes data successfully to student.txt file, but when I open it and print line by line of the file, it always shows file not found.

Could anyone help me with that?

    ifstream Myfile;


    Myfile.open("student.txt");


      if(!Myfile){
        cout<<"Sorry file can't be opened" <<endl;

        exit(1);
    }


        else
        { 

            // Use loop and read the names and ids from the file and display them 
        string line;
        while (getline(Myfile, line)){

        cout<<line<<endl;
    }

            // Close the file 
      Myfile.close();

You're opening it with a relative path. Are you sure the *path* is what you expect it to be? — Some programmer dude, Sep 21 '18 at 21:04
*"In the following program, it writes data successfully"* The code you show is not a complete program, and in any case doesn't write any data to any file. Show a [mcve] — Igor Tandetnik, Sep 21 '18 at 21:15
@JohnnyMopp yes first part, write multiple lines through loop. Then close it. Then open it again. That’s what the instruction said. — Goola, Sep 21 '18 at 21:20
Then we need more code. Also, what exactly is printed? The question says, "file not found". But the code says "Sorry file can't be opened". — 001, Sep 21 '18 at 21:29
Is it showing file not found or cannot open? These are 2 different things — Killzone Kid, Sep 21 '18 at 21:55

score 3 · Answer 1 · edited Sep 22 '18 at 05:16

3

Check where your file is placed. Depending on IDE program can look for file in the root folder of the project or in the folder where compiled binaries are situated.

or

Simply specify the full path to the file.

edited Sep 22 '18 at 05:16

Tigerjz32

4,324
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answered Sep 21 '18 at 21:45

Oleksii Marchenko

56
1

score 0 · Answer 2 · answered Sep 21 '18 at 22:52

Your application has a "Working Directory". This is the directory in which it tries to open files.

In your case the file is probably not in the "Working Directory" of the running application. So the solution is:

Put the file in the "Working Directory" of the application
Change the application "Working Directory".
Use an Absolute Path for the file name.

Also see: How do I get the directory that a program is running from?

File is not opening even though it exists

2 Answers2