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  1. ruby 2.3.3p222 (2016-11-21 revision 56859) [i386-mingw32]
  2.  
  3. C:\Users\students>irb
  4. irb(main):001:0> name = "Grace"
  5. => "Grace"
  6. irb(main):002:0> if name = "Grace"
  7. irb(main):003:1> if name == "Grace"
  8. irb(main):004:2> puts "My Name is Grace!"
  9. irb(main):005:2> elsif name == "Kathy"
  10. irb(main):006:2> puts "I am named KAtherine"
  11. irb(main):007:2> end
  12. irb(main):008:1> name
  13. irb(main):009:1> Grace
  14. irb(main):010:1>
  15. irb(main):011:1*
  16. irb(main):012:1* def add(num1, num2)
  17. irb(main):013:2> num1 + num2
  18. irb(main):014:2> end
  19. irb(main):015:1> add(8,10)
  20. irb(main):016:1>
  21. irb(main):017:1* ^C
  22. irb(main):017:0> def add(num1,num2)
  23. irb(main):018:1> num1 + num2
  24. irb(main):019:1> end
  25. => :add
  26. irb(main):020:0> add(2,3)
  27. => 5
  28. irb(main):021:0> ^C
  29. irb(main):021:0> name = "Gracie"
  30. => "Gracie"
  31. irb(main):022:0> if name == "Gracie"
  32. irb(main):023:1> puts "My name is Gracie!"
  33. irb(main):024:1> elsif name == "Kelly"
  34. irb(main):025:1> puts "I am a potato"
  35. irb(main):026:1> end
  36. My name is Gracie!
  37. => nil
  38. irb(main):027:0> def add(num1,num2)
  39. irb(main):028:1> add1+ add2
  40. irb(main):029:1> end
  41. => :add
  42. irb(main):030:0> def add(num1,num2)
  43. irb(main):031:1> num1 + num2
  44. irb(main):032:1> end
  45. => :add
  46. irb(main):033:0> add(5,4)
  47. => 9
  48. irb(main):034:0> ^C
  49. irb(main):034:0> name = "Kathy"
  50. => "Kathy"
  51. irb(main):035:0> if name == "Koko"
  52. irb(main):036:1> puts "I am COCO PUFFS"
  53. irb(main):037:1> elsif name == "Kathy"
  54. irb(main):038:1> puts "I AM KALLY"
  55. irb(main):039:1> end
  56. I AM KALLY
  57. => nil
  58. irb(main):040:0> name = "benedict"
  59. => "benedict"
  60. irb(main):041:0> if name == "john"
  61. irb(main):042:1> puts "sherlock"
  62. irb(main):043:1> elsif name == "benedict"
  63. irb(main):044:1> puts "yay"
  64. irb(main):045:1> end
  65. yay
  66. => nil
  67. irb(main):046:0>
  68. irb(main):047:0*
  69. irb(main):048:0*
  70. irb(main):049:0* >^C
  71. irb(main):049:0> recipe["chocolate", "cookie dough", "sugar"]
  72. NameError: undefined local variable or method `recipe' for main:Object
  73. from (irb):49
  74. from C:/Ruby23/bin/irb.cmd:19:in `<main>'
  75. irb(main):050:0> reciipe =["sugar", "chocolate", "bread"]
  76. => ["sugar", "chocolate", "bread"]
  77. irb(main):051:0> reciipe[0]
  78. => "sugar"
  79. irb(main):052:0> potato types = ["baked", "mashed", "fried", "broiled"]
  80. NoMethodError: undefined method `potato' for main:Object
  81. from (irb):52
  82. from C:/Ruby23/bin/irb.cmd:19:in `<main>'
  83. irb(main):053:0> ^C
  84. irb(main):053:0> ^C
  85. irb(main):053:0> ^C
  86. irb(main):053:0> potatos =["baked", "broiled", "mashed", "fried"]
  87. => ["baked", "broiled", "mashed", "fried"]
  88. irb(main):054:0> potatos[2]
  89. => "mashed"
  90. irb(main):055:0> name="meow"
  91. => "meow"
  92. irb(main):056:0> "meow".upcase
  93. => "MEOW"
  94. irb(main):057:0> name= "potatooooo"
  95. => "potatooooo"
  96. irb(main):058:0> "meow".upcase
  97. => "MEOW"
  98. irb(main):059:0> "potatooooo".upcase
  99. => "POTATOOOOO"
  100. irb(main):060:0> ^C
  101. irb(main):060:0> varname = tomato
  102. NameError: undefined local variable or method `tomato' for main:Object
  103. from (irb):60
  104. from C:/Ruby23/bin/irb.cmd:19:in `<main>'
  105. irb(main):061:0> tomato = true
  106. => true
  107. irb(main):062:0> if tomato == true
  108. irb(main):063:1> puts "Lets make a pizza"
  109. irb(main):064:1> elsif tomato == false
  110. irb(main):065:1> puts "I HATE PIZZA"
  111. irb(main):066:1> end
  112. Lets make a pizza
  113. => nil
  114. irb(main):067:0> tomato = "true"
  115. => "true"
  116. irb(main):068:0> tomato = "grace"
  117. => "grace"
  118. irb(main):069:0> if tomato = "grace"
  119. irb(main):070:1> print "yum"
  120. irb(main):071:1> else
  121. irb(main):072:1* print "oh"
  122. irb(main):073:1> end
  123. (irb):69: warning: found = in conditional, should be ==
  124. yum=> nil
  125. irb(main):074:0> end
  126. SyntaxError: (irb):74: syntax error, unexpected keyword_end
  127. from C:/Ruby23/bin/irb.cmd:19:in `<main>'
  128. irb(main):075:0> ^C
  129. irb(main):075:0> tomato = "grace"
  130. => "grace"
  131. irb(main):076:0> if tomato == "grace"
  132. irb(main):077:1> print "yum yayayyayay"
  133. irb(main):078:1> else
  134. irb(main):079:1* print "ohhh hmananannan"
  135. irb(main):080:1> end
  136. yum yayayyayay=> nil
  137. irb(main):081:0> ^C
  138. irb(main):081:0> ^C
  139. irb(main):081:0>
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