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Full Discussion: fscanf()
Top Forums Programming fscanf() Post 17106 by j_t_kim on Monday 11th of March 2002 10:16:24 AM
Old 03-11-2002
fscanf()

I keep trying to use fscanf() and for some reason I can't get the syntax down and always get seg faults. I'm on a SunOS 5.5.1, and my current code looks like this:

int n1, n2, n3, n4, n5, n6;

/* open config file */
if (fileptr = fopen(filename,"r") == NULL) {
printf("couldn't open file, errno: %d\n", errno);
exit(0);
}

fscanf(fileptr, "%d %d %d %d %d %d", &n1, &n2, &n3, &n4, &n5, &n6);


(end)
######### FIRST LINE FILE LOOKS LIKE THIS #######
4500 4017 1 0 1 2

I've been trying to get past this for hours now and was hoping someone could offer some advice or explanation as to why it keeps seg faulting. THANKS!
 

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FSCANF(3)								 1								 FSCANF(3)

fscanf - Parses input from a file according to a format

SYNOPSIS
mixed fscanf (resource $handle, string $format, [mixed &$...]) DESCRIPTION
The function fscanf(3) is similar to sscanf(3), but it takes its input from a file associated with $handle and interprets the input according to the specified $format, which is described in the documentation for sprintf(3). Any whitespace in the format string matches any whitespace in the input stream. This means that even a tab in the format string can match a single space character in the input stream. Each call to fscanf(3) reads one line from the file. PARAMETERS
o $handle -A file system pointer resource that is typically created using fopen(3). o $format - The specified format as described in the sprintf(3) documentation. o $... - The optional assigned values. RETURN VALUES
If only two parameters were passed to this function, the values parsed will be returned as an array. Otherwise, if optional parameters are passed, the function will return the number of assigned values. The optional parameters must be passed by reference. EXAMPLES
Example #1 fscanf(3) Example <?php $handle = fopen("users.txt", "r"); while ($userinfo = fscanf($handle, "%s %s %s ")) { list ($name, $profession, $countrycode) = $userinfo; //... do something with the values } fclose($handle); ?> Example #2 Contents of users.txt javier argonaut pe hiroshi sculptor jp robert slacker us luigi florist it SEE ALSO
fread(3), fgets(3), fgetss(3), sscanf(3), printf(3), sprintf(3). PHP Documentation Group FSCANF(3)
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