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 false
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思路分析
The question presents a scenario with Ada pointers (access types) and asks to fill in a few blanks about Y in relation to X, followed by a true/false statement.
First, consider the initial declarations: X : access Integer := new Integer'(5); creates an access value (pointer) X that points to a newly allocated Integer with value 5. Next, Y : access Integer := X; copies the access value from X into Y, so Y now refers to the same Integer object as X. In Ada, this ......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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