## Calculation ??

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• Hi - Im a bit stuck (i ll try & figure it out tonight) - But if anyone can spot it easily, can you let me know .. Basically, The script scans a file, comparing
Message 1 of 1 , Sep 3, 2001
Hi - Im a bit stuck (i'll try & figure it out tonight) - But if anyone can spot it easily, can you let me know ..

Basically,

The script scans a file, comparing 1 number with numbers in the file to work out what section of the file to scan/search.

\$ird is the number im trying to find..
\$ara[6] is from the file being read - Compared to \$ird

It reads from the file ok, - The \$min & Max are worked out correctly (to find out what point in the file my 'account' / \$ird is located..

However, - my \$mid figure drops down to below where my \$ird figure is, & it SHOULD increase - to scan the next / 'higher number' part of my file.

But it doesnt.

Can anyone easily spot why it doesnt increase ?

------------------

\$check=1;
\$max=0;
\$min=0;

while (\$check eq 1) {

open INF, "<jul2001.csv" or die "can't open schools.dat65 : \$!";
\$size = -s INF;
if (\$max < 1){\$max = \$size;}

\$mid=int(((\$max-min)/2)+\$min); #halfway between min&max

\$count=0;

# flock(INF,2);

seek(INF,\$mid,0);
\$bytes = read INF, \$buffer, 100000, 0;
(@araa)=split(/\n/,\$buffer);
close(INF);
print "<CENTER>Start = \$start - Size = \$size<BR>Midsize = \$mid<\/CENTER>\n";

pop (@araa); # gets rid of the start / end 'half-lines'
shift (@araa);

@ara = split(/,/,\$araa[0]); #ara 6 is the account-number im comparing to

\$gr=0;

\$maxcount=0;
foreach \$line (@araa){

\$ara[6] =~ s/^0//; #chops off leading zero

# print "<BR>'\$ara[6]' \$count \$line<BR>\n";

if (\$gr eq 0){
print "'\$ara[6]' '\$ird' '\$mid'<BR>\n";
\$gr=1;

}

\$check=0;

if (\$ird < \$ara[6]){
\$max=(((\$mid-\$start)/2)+\$start); #reduces the \$max figure
\$check=1;
}
if (\$ird > \$ara[6]){
\$min=(\$max-((\$max-\$mid)/2));
\$check=1;
}

\$count++;
}
}
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