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sscanf
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  • Shan Yang
    started a topic How to parse string with sscanf that have a empty field?
    in C

    How to parse string with sscanf that have a empty field?

    Hi,

    I am handling tab delimited txt files that have multiple fields. But some of the fields can be empty. So it will appear as <TAB><TAB> in the file rather than <TAB>something< TAB>. If I read in the line and then use something like


    Code:
    sscanf(buf0, "%s %ld %ld %s %s %s %s %s", chr, &bg, &ed, zg, var, ref, s1, s2);
    The program will skip these...
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    • Bangonkali
      started a topic Gcc doesn't seem to get my scanf right, but Visual Studio does, what's wrong?
      in C

      Gcc doesn't seem to get my scanf right, but Visual Studio does, what's wrong?

      First I actually thought there was something wrong with my programming skills. But after I compiled the same code using Visual Studio, it worked. So here's the code that doesn't seem to be working right with gcc compilers, but they do compile. Note I'm using the Cygwin 3.4.4 version of gcc and 4.5.1 version of gcc from MinGW.

      Code:
      #include <stdio.h>
#include <math.h>
int main()
{
    long double r = 0;
      ...
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      Last edited by Bangonkali; Dec 11 '10, 07:47 AM. Reason: Revised Formatting
      • Kevin Goodsell
        Guest started a topic sscanf return value with "%n" directive
        in C

        sscanf return value with "%n" directive

        The return value of sscanf should be "the number of input items
        assigned" (unless an input failure occurs before any conversion). Are
        items assigned due to a "%n" directive included in the returned count?

        Thanks.

        -Kevin
        --
        My email address is valid, but changes periodically.
        To contact me please use the address from a recent posting....
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