Ruby Programming Questions and Answers – Comments in Ruby

This set of Ruby Programming Multiple Choice Questions & Answers (MCQs) focuses on “Comments in Ruby”.

1. Why do we use comments?
a) For later use to understand the working of the program
b) It is an efficient way of programming
c) It makes easy for the third person to understand
d) All of the mentioned
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2. Which of the following type of comments are valid in ruby?
a) Single line comments
b) Multi line comments
c) Double line comments
d) All of the mentioned
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3. How to comment multiple lines in ruby?
a) Using multiline comments
b) Using single line comments
c) No option to comment
d) All of the mentioned
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4. How to comment a single line?
a) Using #
b) Using begin and end
c) Using //
d) None of the mentioned
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5. This the right way to comment a single line.
“Ruby”.length # I’m a single line comment!
a) True
b) False
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6. What is the output of the given code?
“Ruby”.length #to find the length of given string
a) 4 to find the length of given string
b) 4
c) To find the length of given string
d) Ruby
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7. The following syntax is used for multiline comment.

=begin
    iam in a multi line comment
   =end

a) True
b) False
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8. The following is the correct way to use multiline comment.

 = begin
   # comment
   = end

a) True
b) False
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9. Why do we use =begin and =end?
a) To mark the start and end of multiline comment
b) To comment multiple lines
c) To avoid the use of # again and again
d) All of the mentioned
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10. What is the output of the given code?

"Ruby Language".length
       =begin
       calculate length
       =end

a) 13
b) 13 calculate length
c) 12
d) None of the mentioned
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Output:
13

11. What is the output of the given code?

"Ruby Language".length
       = begin
       calculate length
       = end

a) 13
b) 12
c) Error
d) None of the mentioned
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Output:
Syntax error, unexpected '=', expecting $end
= begin

12. Space between 2+5 or 2 + 5 is valid but =begin and = begin is not valid.
a) True
b) False
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Sanfoundry Global Education & Learning Series – Ruby Programming.

To practice all areas of Ruby Programming, here is complete set of 1000+ Multiple Choice Questions and Answers.