题目
题目
单项选择题

What is a pointer to a pointer?

选项
A.A pointer that stores the address of another pointer
B.A function returning a pointer
C.A pointer to a constant
D.A pointer created by malloc
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思路分析
Question: What is a pointer to a pointer? Options: 1) A pointer that stores the address of another pointer 2) A function returning a pointer 3) A pointer to a constant 4) A pointer created by malloc Option 1: A pointer that stores the address of another pointer. This description matches the standard definition of a pointer to a pointer (often called a......Login to view full explanation

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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

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 [ Select ] true false

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