题目
SWEN90010_2025_SM1 Practice Exam
多重下拉选择题
Consider the following Ada program. procedure Pointers is X : access Integer := new Integer'(5); Y : access Integer := X; begin Y.all := 10; end Pointers; Variable Y is called an alias for X because because X and Y both refer to the same memory location . After this program finishes executing, the statement "X.all = 5" is false
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思路分析
Question restatement: The Ada code creates two access-to-Integer variables, X and Y, where X points to a heapInteger with value 5, and Y is assigned from X so that Y refers to the same heap object. Then Y.all is set to 10. The prompt presents three dropdown selections: (1) a label for Y, (2) a justification about aliasing, and (3) the truth value of the statement about X.all equals 5 ......Login to view full explanation登录即可查看完整答案
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Consider the following Ada program. procedure Pointers is X : access Integer := new Integer'(5); Y : access Integer := X; begin Y.all := 10; end Pointers; Variable Y is called an [ Select ] reference alias duplicate pointer for X because [ Select ] because X and Y both refer to the same memory location because X and Y refer to distinct (separate) memory locations because Y refers to the memory that holds the pointer X because X and Y are both pointers . After this program finishes executing, the statement "X.all = 5" is false
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