Re: fscanf hangs

On Jun 26, 12:19 am, Barry Schwarz <schwa...@xxxxxxxxx> wrote:

This sure seems like a lot of work just avoid calling fgets.

MUCH more than worth it. I have replaced a black box that hangs with
much more transparent code that does not. If it did hang or crash, I
would have a much better idea of why.

Is 32 bytes really sufficient to hold the longest line in your file?

Excellent point. I will modify FReadLine() so that there is a maximum
to the number of characters that are read.


do
{
if ((enErrorNumber=FReadLine(fpFile, csBuffer))!=ERROR_NONE) break;
lX=atoi(strtok(csBuffer, "\t"));
lY=atoi(strtok(NULL, "\t"));
fMean=(float)atof(strtok(NULL, "\t"));

The cast is superfluous.

fMean=atof(strtok(NULL, "\t"));
warning C4244: '=' : conversion from 'double' to 'float', possible
loss of data


So far no problem.

So you have managed to camouflage the problem with no understanding of
what the real issue was?


I may have evaded the issue but have replaced a black box, that hangs
with no error message, with more transparent code. fscanf probably
hung because it was waiting for a particular input. It was not
suitable for this application since the expected input may not have
been in the input file. I think my modification has given me more
control and has made the code potentially more robust.

Thanks,
Peter.

.

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