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Top Forums Programming Help in extracting data with command from file in C Post 302177379 by ahjiefreak on Thursday 20th of March 2008 10:24:42 PM
Old 03-20-2008
Hi,

I managed to get them corrected and its running. Thanks alot.

However, I have another question; given that I need to generate alot of these test files. I have a fopen function in my separate main code which write numbers to these file. But I wanted to differentiate these file number.

Do you aware how could we insert number variable in fopen command?
Assume that I have a counter of size 100 whether each round i need to execute below.

e.g
Code:
if((cfPtr = fopen("test%d.txt","a+"))==NULL)
        	               printf("File could not be opened\n");
                else fprintf(cfPtr, "%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d \n", a,b,c,d...);

So that each time the variable counter loops,it will write on different file?

e.g test1, test2,test3.txt...etc. for each different counter counts.

Please advise.
 

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VFPRINTF(3)								 1							       VFPRINTF(3)

vfprintf - Write a formatted string to a stream

SYNOPSIS
int vfprintf (resource $handle, string $format, array $args) DESCRIPTION
Write a string produced according to $format to the stream resource specified by $handle. Operates as fprintf(3) but accepts an array of arguments, rather than a variable number of arguments. PARAMETERS
o $handle - o $format - See sprintf(3) for a description of $format. o $args - RETURN VALUES
Returns the length of the outputted string. EXAMPLES
Example #1 vfprintf(3): zero-padded integers <?php if (!($fp = fopen('date.txt', 'w'))) return; vfprintf($fp, "%04d-%02d-%02d", array($year, $month, $day)); // will write the formatted ISO date to date.txt ?> SEE ALSO
printf(3), sprintf(3), sscanf(3), fscanf(3), vsprintf(3), number_format(3). PHP Documentation Group VFPRINTF(3)
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