首页/ 题库 / [单选题]11. class Cup { }  1的答案

11. class Cup { }  12. class PoisonCup extends Cup { }  21. public void takeCup（Cup c） {  22. if（c instanceof PoisonCup） {  23. System.out.println（”Inconceivable!”）；  24. } else if（c instanceof Cup） {  25. System.out.println（”Dizzying intellect!”）；  26. } else {  27. System.exit（0）；  28. }  29. }  And the execution of the statements：  Cup cup = new PoisonCup（）； takeCup（cup）；  What is the output？（） 

单选题
2022-06-18 15:31
A、 Inconceivable!
B、 Dizzying intellect!
C、 The code runs with no output.
D、 An exception is thrown at runtime.
E、 Compilation fails because of an error in line 22.
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正确答案
A
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