回答編集履歴
2
コード追記
test
CHANGED
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@@ -33,3 +33,37 @@
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33
33
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>50
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34
34
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35
35
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>50
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36
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+
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37
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+
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38
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+
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39
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無理矢理nilを出力させようとするならこんな感じでしょうか。
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40
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+
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41
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+
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42
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43
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```ruby
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44
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+
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45
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def area(x,y)x*y if x end
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46
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47
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48
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49
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class Rect
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50
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51
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def initialize(x,y)@x,@y=x,y end
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52
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53
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attr_reader :x,:y
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54
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55
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def area()x*y if x end
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56
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57
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end
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58
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59
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60
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61
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puts area(nil,nil)
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62
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63
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puts Rect.new(nil,nil).area
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64
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65
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puts area(10,5)
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66
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67
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puts Rect.new(10,5).area
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68
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+
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69
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```
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1
インデント編集
test
CHANGED
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@@ -12,13 +12,11 @@
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12
12
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13
13
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class Rect
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14
14
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15
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-
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-
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def initialize(x,y)@x,@y=x,y end
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16
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19
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-
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17
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attr_reader :x,:y
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18
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21
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-
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def area()x*y end
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20
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end
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22
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