Comments on: 13.6 — Basic file I/O

By: chrys

chrys — Fri, 11 Mar 2011 08:56:00 +0000

cstdlib!

By: chrys

chrys — Fri, 11 Mar 2011 08:54:53 +0000

For those that get an “error: ‘exit’ was not declared in this scope” they have to include

By: tylerfb11

tylerfb11 — Tue, 12 Oct 2010 19:55:06 +0000

hmmm.... Wordpress strikes again:

cout  <> nMyFavNum;
cout  <> nMyFavLet;

should be:

cin >> nMyFavNum;
cin >> nMyFavLet;

-Tyler

By: tylerfb11

tylerfb11 — Tue, 12 Oct 2010 19:48:26 +0000

It sure is possible! You can outf a varible just like you do with cout:

int main()
{
    using namespace std;

    int nMyFavNum;
    char nMyFavLet;

    cout <> nMyFavNum;
    cout <> nMyFavLet;

    ofstream outf("MyFile.txt");

    outf << "My favorite number is: ";
    outf << nMyFavNum << endl;
    outf << "My favorite letter is: ";
    outf << nMyFavLet << endl;


    cout << "Thank-you!" << endl;
    system("pause");

  return 0;
}

-Tyler

By: Coderdude

Coderdude — Tue, 13 Apr 2010 03:05:38 +0000

Hmm… I’m wondering if you can make the program so that the user can write to the file? Like, something with cin. Is it possible? It probably is, and has an easy explanation, but I just want to know if it is possible, and how to write the program to do this if it is possible. Thanks!!

By: alex

alex — Fri, 31 Jul 2009 12:43:24 +0000

Ignore my previous comment, I had overlooked the explanation below (use double backslashes):
“c:\\test\\abc.txt”

This worked for me.

By: alex

alex — Fri, 31 Jul 2009 11:49:04 +0000

I tried adding the complete path and filename, but it still outputs the file in the projects folder.
Is there a way to actually output the file where you want? It can’t be that difficult…
Thanx

By: Chandrakant

Chandrakant — Thu, 07 May 2009 10:33:53 +0000

if you given complete file path using single slash separator like “c:\test\abc.txt” try with double slash separator like “c:\\test\\abc.txt”

By: Alex

Alex — Sat, 02 May 2009 03:27:56 +0000

I do read all the comments (eventually). I don’t know why it wouldn’t be outputting a file. Perhaps you don’t have permission to create files in the output directory? Seems unlikely though. You might do a google search on ofstream() and see if you can find reasons that it might fail. I can’t think of any other obvious reasons.

By: Alex

Alex — Sat, 02 May 2009 03:25:59 +0000

I believe instead of specifying just a filename, you can specify a path and a filename. I’m not sure which directory corresponds to the windows desktop, but there is one somewhere on your hard drive…