Why do we use comments?

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Question:
 Why do we use comments?

1.For later use to understand the working of the program

2.It is an efficient way of programming

3.It makes easy for the third person to understand

4.All of the Mentioned

More MCQS Questions and answers

  1. If expression. The expression can be of which type?
  2. What is the output of given code? string="I'am Learning RUBY Language".downcase string.upcase
  3. What is the output of the code? print "What's your first name?" first_name=gets.chomp a=first_name.capitalize first_name.capitalize! print "What's your last name?" last_name=gets.chomp b=last_name.capitalize last_name.capitalize! puts "My name is #{first_name} #{last_name}"
  4. What is the output of the given code? a = 5 b=10 while a <10 || b<20 puts a*b a+=2 b+=2 end
  5. What is the output of the given code? "Ruby Language".length = begin calculate length = end
  6. What is the output of the given code? a = 22.5 while a >11.5 puts a a-=3.5 end
  7. What is the output of the given code? a = 5 b=10 while a <10 && b<20 puts a*b a+=2 b+=2 end
  8. What is the output of the given code? Ans=Ruby puts "#[Ans] is an oop language"
  9. What is the output of the given code? my_string=Ruby puts(my_string)
  10. What is the range of octal notation ( nn)?
  11. What will be the output of the following? "Eric".irreverse
  12. What will be the output of the following? "Ruby".reverse.upcase
  13. What will be the output of the given code? boolean_1 = false || -10 > -9 puts boolean_1
  14. What will the following expression evaluate to? true && false
  15. Which of the following is a valid assignment operator?
  16. Which of the following is a valid boolean operator?
  17. Which of the following is supported by Ruby?
  18. Which of the following is the valid string method?
  19. Why do we use comments?
  20. For getting an input from the user which method is used?
  21. How to comment a single line?
  22. How to comment multiple lines in ruby?
  23. How to comment multiple lines in ruby? a)
  24. Objects of which class does the integer from the range -2^30 to 2^(30-1) belong to?
  25. What do we mean by expression substitution?
  26. What does %Q{ Learn ruby language } represents? a) ”
  27. What does %x!ls! represents?
  28. What does %{Learn ruby language} represents? a) “ b) “%{Learn Ruby language}” c) ” d) None of the mentioned
  29. What does the **= assignment operator do?
  30. What does the .upcase method do?
  31. What does the notataion  stands for?
  32. What is the extension used for saving the ruby file?
  33. What is the output of given code? puts "what is your first name?" name=gets.chomp puts "what is your surname?" surname=gets.chomp
  34. What is the output of the code? if 11<2 print "Eleven is less than two" end print "11 is greater"
  35. What is the output of the code? print "What's your first name?" first_name=gets.chomp a=first_name.capitalize first_name.capitalize! print "What's your last name?" last_name=gets.chomp b=last_name.capitalize last_name.capitalize puts "My name is #{first_name} #{last_name}"
  36. What is the output of the following? if 1<2 print "one is less than two" end
  37. What is the output of the following? "Iam learning ruby language".length
  38. What is the output of the given code? a = 5 b=10 while (a <10 || b<20)&&true puts a*b a+=2 b+=2 end
  39. What is the output of the given code? a= 5 b=10 while a <10 && b<20 puts a-b a+=2 b+=2 end
  40. What is the output of the given code? print "What's your first name?" first_name=gets.chomp a=first_name.capitalize a=a.reverse puts"My name is #{a}"
  41. What is the output of the given code? x, y, z = 12, 36, 72 puts "The value of x is #{ x }." puts "The sum of x and y is #{ x + y }." puts "The average was #{ (x + y + z)/3 }."
  42. What is the output of the given code? "Ruby Language".length =begin calculate length =end
  43. What is the output of the given code? a = 5 b=10 while a <10 && b<20 puts a+b a+=2 b+=2 end
  44. What is the output of the given code? a="string" b="strings" if(a==b) print ("a and b are same") else print "Not same" end
  45. What is the output of the given code? a=10 b=9 if(a>b) print ("a greater than b") else print "Not greater" end
  46. What is the output of the given code? Ans=Ruby puts "#{Ans} is an oop language" puts "It is very efficient langauge" puts "#{expr} is used on rails platform"
  47. What is the output of the given code? boolean_1 = 77<78 puts(boolean_1)
  48. What is the output of the given code? counter = -50 while counter <0 puts counter counter+=10 end
  49. What is the output of the given code? counter = 1 while counter < 11 puts counter counter+=1 end
  50. What is the output of the given code? counter = 100 while counter > 0 puts counter counter-=25 end
  51. What is the output of the given code? counter = 100 while counter > 0 puts counter counter/=5 end
  52. What is the output of the given code? counter=1 if counter<=5 puts (counter) counter=counter+1
  53. What is the output of the given code? if 11>2 puts "Eleven is greater than two" end print "You'r right"
  54. What is the output of the given code? if(a==10 && b=9) print "true" else print "false" end
  55. What is the output of the given code? print "What's your address" city,state,pin=gets.chomp,gets.chomp,gets.chomp puts "Iam from #{city} city, #{state} state, pincode: #{pin} "
  56. What is the output of the given code? print "what's your first name?" first_name=gets.chomp a=first_name.capitalize "a".reverse puts"My name is #{a}"
  57. What is the output of the given code? print "what's your first name?" first_name=gets.chomp a=first_name.capitalize "first_name.capitalize!".reverse puts"My name is #{first_name}"
  58. What is the output of the given code? test_1 = 17 > 16 puts(test_1) test_2 = 21 <= 30 puts(test_2) test_3 = 9 >= 9 puts(test_3) test_4 = -11 > 4 puts(test_4)
  59. What is the output of the given code? “Ruby”.length #to find the length of given string
  60. What is the output of the the given code? puts "My name is #{Name}"
  61. What is the role of ! at the end of the capitalize method?
  62. What is the size of an integer data type in ruby?
  63. What is the use of .capitalize method?
  64. What will any variable evaluate to if it is of Boolean data type?
  65. What will be the output of the given code? boolean_1 = !(3 < 4 || false) && (false || true) puts boolean_1
  66. What will be the output of the given code? boolean_1 = !(700 / 10 == 70) puts boolean_1
  67. What will be the output of the given code? boolean_1 = !true puts boolean_1 boolean_2 = !true && !true puts boolean_2
  68. What will be the output of the given code? boolean_1 = (3 < 4 || false) && (false || true) puts boolean_1
  69. What will be the output of the given code? boolean_2 = !true && (!true || 100 != 5**2) puts boolean_2
  70. What will be the output of the given code? "Come let's learn.reverse Ruby.length language".upcase
  71. What will be the output of the given code? "I'am learning Ruby Language".length.reverse.upcase
  72. What will be the output of the given code?boolean_1 = 77 < 78 && 77 < 77 puts boolean_1
  73. What will the following expression evaluate to? !true && !false
  74. What will the following expression evaluate to? (true && false) || (!true)
  75. What will the following expression evaluate to? true || false mentioned
  76. What will we the output of the given code? "I'am Learning RUBY Language".downcase
  77. What will we the output of the given code? I'am Learning RUBY Language.downcase
  78. Which of the following are used for comparison?
  79. Which of the following are valid floating point literal?
  80. Which of the following datatypes are valid in Ruby?
  81. Which of the following features does the 2.0 version of ruby supports?
  82. Which of the following is not a valid datatype?
  83. Which of the following is not a valid library function?
  84. Which of the following is not a valid library function?
  85. Which of the following languages syntax matches with the Ruby’s syntax?
  86. Which sequence can be used to substitute the value of any ruby expression in a string?
  87. Why can not we use quotation marks (‘ or “) with boolean?
  88. Why do we use =begin and =end?
  89. Why is gets not preferred instead of gets.chomp?
  90. Why is the library function ‘puts’used for?
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