Thread: Need help for CFile read

  1. #1
    Registered User
    Join Date
    Oct 2009
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    1

    Need help for CFile read

    Hi all, Can someone help me out with this? I would like to read from a file which contain alot of numbers and few letters.
    I try out the code below.

    CFile f1;
    f1.Open("C:/abc/t1", CFile::modeRead| CFile::shareExclusive);
    int len = f1.GetLength();
    char* buf = new char[len+1];
    f1.Read(buf, len);
    while(scanf(buf, "%lf %lf %lf\n", %a, %b, %c);
    {
    //read out the number and letter then do some compare and printf to a new FILE* f2
    }
    f1.Close();


    Using that code, my output result is diff from FILE* f1, fopen, and fscanf.
    I am thinking whether is the problem due to scanf from char* cos if using FILE*, fscanf(f1, "%lf %lf %lf\n", %a, %b, %c); will be ok. That is scanf from file. For my CFile one, it is scanf from char*. So ??????
    I need to use CFile cos i don't want other to open my file when my program is using it. Want to set some security. Please help me out. Thanks alot.
    Last edited by nicholasamh; 10-22-2009 at 07:10 AM.

  2. #2
    the hat of redundancy hat nvoigt's Avatar
    Join Date
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    Posts
    3,130
    That scanf call looks suspicious. Shouldn't that be sscanf and shouldn't there be more parameters, for example the variables you want to read into?
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

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