Perl Answers

Square the number 15 and print the result.

Write the following expression using a shortcut:
$y = $y + 5;

what are two other ways you could write
$x = $x + 1;

Print the average of three floating point numbers with a precision of two decimal places

Question: What will be printed? Why?

$a="no"; # assign variable

if ($a) { #Loop test for variable $results = "Yes!"; #Success?} else { #or maybe $results = "no"; #Failure}
print $results; #Let's find out

i have a .dat file(15 MB) which is basically like text file which has delimiter( | ) separated values(like comma,pipe separated values).I would like this to write these records in an excel file .I am using the Spreadsheet::WriteExcel module and it works fine for small number of records.But I want to generate a single excel file for more than 38000 records.In this case it does not work because of memory management issues and i have to do it using a single excel workbook.Can you suggest some better method.