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 [ Select ] reference pointer duplicate alias for X because [ Select ] because X and Y refer to distinct (separate) memory locations because X and Y are both pointers because X and Y both refer to the same memory location because Y refers to the memory that holds the pointer X . After this program finishes executing, the statement "X.all = 5" is [ Select ] true false

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思路分析

We begin by restating the Ada code scenario to ground the analysis. In the provided program, X is an access-to-Integer object pointing to a heap-allocated Integer initialized to 5. Y is assigned to X, so both X and Y reference the same heap object. The statement Y.all := 10 then mutates that shared object to the value 10. Option 1: 'alias' is the word that best fits how Y relates to X. In......Login to view full explanation