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 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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思路分析

The question asks to fill in two blanks about what Y is relative to X, and then to assess the truth of X.all = 5 after the program runs. Option 1 (Y is called an ...): - alias: This is the correct conceptual idea here. In Ada, Y is declared as an access value (a pointer) that designates the same underlying storage as X. Saying Y is an alias conveys that Y refers to the same object as X rather than a separate separate object. Other possible terms like reference or duplicate do not align with Ada terminology for an access value that designates the same storage. - reference: This would be misleading in Ada terminology since the......Login to view full explanation