If a variable is undefined, its value is ____ - Perl Quiz

Perl - Quiz(MCQ)

If a variable is undefined, its value is ____

A)

0

B)

1

C)

NULL

D)

garbage

Correct Answer : 0

Explanation : When a variable is undefined, it is assumed to be a NULL string and NULL string is numerically zero.

Recently Updated in Perl Questions

Which operator is also known as string repetition operator in perl?

A)

(.)

B)

(x)

C)

($)

D)

(++)

Correct Answer : (x)

"+=" known as ________in Perl.

A)

Assignment Operator

B)

Arithematic Operator

C)

Comparision Operator

D)

Increment/Decrement Operator

Correct Answer : Assignment Operator

Explanation : "+=" known as "Assignment operator" in Perl.

What is the correct operator precedence for the following operators?

&& , &, = , ->

A)

-> , & , && , =

B)

= , & , && , ->

C)

= , -> , && , &

D)

& , && , = , ->

Correct Answer : -> , & , && , =

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