1 Which of the following operators is used to read files? a. !-- b. < > c. ## d.

Question

1 Which of the following operators is used to read files?

a.

!--

b.

< >

c.

##

d.

$$

2. Which of the following is used to identify a subroutine?

a.

@

b.

$

c.

&

d.

#

3. Which of the following is the Perl string concatenation operator?

a.

+ (plus)

b.

: (colon)

c.

. (dot)

d.

- (hyphen)

4. How many errors are in the following program?

# /usr/bin/perl

print "Enter the block size of your file system: "

bs = <STDIN>;

chop ($bs);

if ($bs > 8192)

print "Lot of wasted space ";

} else {

print "Reasonable size";

}

a.

4

b.

5

c.

6

d.

7

Explanation / Answer

1. b.< >
open(readData, "<file.txt")
while(<readData>) {
print "$_";
}
2. c.&
&mysubroutine;
3. c. . (dot)
my $z = $x . ' ' . $y;
4. a. 4
semi-colon missing end of the first line
$ symbol missing at the start of the second line
open bracket missing after if
closing bracket missing of else block

Let me know if you have any queries or clarifications.... :)

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