Programming languages | Practice Questions

Multiple choice technology programming languages

The function to a delete file is

untie
delete
unlink
rm

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Multiple choice technology programming languages

Output of the following:s/(\w)/\u$1/g;

Changes all lower case letters in the string stored in the variable $_ to upper case
Changes the first letter in the string stored in the variable $_ to upper case
Changes all letters in the string stored in the most recently used scalar variable to upper case
adds \u in front of every letter or digit in the string in $_

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Multiple choice technology programming languages

Which of these is a valid regular expression meaning "contains any digit"?

/[1-9]/
/^\d+$/
/^\d+/
m-\d-

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Multiple choice technology programming languages

open (INPUT,"){ print $_; } How many times will the file get printed?

once
twice
the program will go on into infinite loop
None of the above

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Multiple choice technology programming languages

Which of the following is a valid scalar variable name?

$section_32B
$baby-boy
$401k
$tic#tac#toe

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Multiple choice technology programming languages

Code 1: Code: my @lines = grep /^hi/, @allLines; Code 2: Code: my @lines = (); foreach (@allLines) { push (@lines,$_) if (/^hi/); } What is the difference between the two snippets (Code 1 and Code 2) above?

In code 1, the operation occurs in one command; code 2 iterates each element in the array for matches.
In code 1, the elements of @lines are the indexes in @allLines, in which matches were found.
In code 1, the elements of "@lines" begin with the index in "@allLines", in which the match was found.
In code 1, "@lines" may not necessarily be in the same order; the original lines appear in "@allLines".

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Multiple choice technology programming languages

What type of variable is INPUT?

A File Handle
A List
A Code variable
A Tyleglob

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Multiple choice technology programming languages

For a time in the month of March, the localtime function will return a month of:

2
3
Mar
March

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Multiple choice technology programming languages

The following will result in which of the following, if the prize is currently "10 dollars" print 'You won $prize';

You won $10.00
You won 10 dollars
You won $prize
You won $10

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Multiple choice technology programming languages

Which of these is not a method of DateTime object?

AddTick()
GetMonth()
GetHashCode()
AddMilliSeconds()
All the Above

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