CGI Perl Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

CGI Perl Interview Questions

Questions Answers Views Company eMail

How do you debug a Perl scripting ( at the compile time error or run time error) in Unix environment ?

4 9394

how to search a unique pattern in a file by using perl hash map function ??? plz answer me

2 7568

how to install a package in perl ????

2 5619

How to count no of occurrence of a unique patterns in perl?

Ness Technologies,

4 15076

what is the difference between require and use in perl?

IBM,

3 10001

what is the difference b/w coldfusion MX 6 and Coldfusion MX 7?

1 4618

Which web site will help the student to download the Java mini Project ?

3 4244

while(my($key, $value) = each(%hash) ) { print "$key => $value\n"; } my($key, $value); while(($key, $value) = each(%hash) ) { print "$key => $value\n"; } What is the different between these two code in case of "my" usage ?

1 5040

my @array=('data1','data2'); my @array1=('data1','data2'); my ($i,$k); $i=7; $k=7; while($i){ $array [++$#array] = 'ree'; $i--; print "@array"; } while($k){ push(@array1,'ree'); $k--; print "@array1"; } Are these two while loop are doing the same functionality ? What may be the difference?

A1 Technology,

1 3810

What is the difference between $array[1] and @array[1]?

1 4547

How can I implement the function overloading in Perl ? I read about the operator overloading, I do not know how to implement the function overloading. Thanks in advance ?

2861

2 4039

Consider the following example #! /bin/perl use strict; sub sample { my @arr=(1,2,3,4); return @arr; } my ($a,$b,$c,$d) = &sample; print "$a\n$b\n$c\n$d\n"; In the above code, How can I get the $c without using the arguments such as $a,$b. I don't want to use any array to get the return values.

2 3941

package MYCALC; use Exporter; our @EXPORT = (); our @ISA = qw(Exporter); our @EXPORT_OK = qw(addition multi); our %EXPORT_TAGS = (DEFAULT => [qw(&addition)],Both => [qw(&addition & +multi)]); sub addition { return $_[0] + $_[1]; } sub multi { return $_[0] * $_[1]; } 1; Program: use strict; use warnings; my @list = qw (2 2); use Module qw(:DEFAULT); print addition(@list),"\n"; Above coding is my module MYCALC and the program which using this module, I have not exported any function using @EXPORT, but I have used the DEFAULT in %EXPORT_TAGS with the function addition, when I call this function from the main it says the error as,

2628

write a script to check whether user enter a value is a leap year or not?

Oracle, Persistent, ViPrak,

3 15580

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Un-Answered Questions { CGI Perl }

What does delete function do in perl?

934

How to close a directory in perl?

878

How to print escaping characters inside a string in perl?

853

Explain '->' in perl?

880

Differentiate between c++ and perl.

953

How to compare two strings in perl?

893

How to connect to SQL server through Perl?

990

How do I send e-mail from a Perl/CGI program on a Unix system?

966

How do you give functions private variables that retain their values between calls?

907

List the prefix dereferencer in Perl.

886

What is the purpose of _package_ literal?

965

In Perl we can show the warnings using some options in order to reduce or avoid the errors. What are that options?

954

Explain regular expression in perl?

901

You want to connect to sql server through perl. How would you do that?

892

What are scalars?

945

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