21. Given the declarations what is the data type of the expression ptr? Question

Question

21.

Given the declarations
what is the data type of the expression ptr?

Question 22

Given the declarations:

                                struct ListNode

                                {

                                    float     volume;

                                    ListNode* next;

                                };

                                ListNode* ptr;

               

                what is the data type of the expression ptr->next->next->volume?

ListNode*

ListNode

23. Given the declarations above
   what is the data type of the expression ptr->next?

Question 24

Given the declarations
   what is the data type of the expression ptr->next->next->volume?

Question 25

Given the declarations

struct ListNode
{
float volume;
ListNode* next;
};
ListNode* ptr;

what is the data type of the expression ptr->next->volume->next?

Question 26

Given the declarations


struct ListNode
{
float volume;
ListNode* next;
};
ListNode* ptr;

what is the data type of the expression ptr.volume?

Question 27

Given the declarations


struct ListNode
{
float volume;
ListNode* next;
};
ListNode* ptr;

which of the following is of type ListNode?

Question 28

Given the declarations

struct ListNode
{
float volume;
ListNode* next;
};
ListNode* ptr;

which of the following is a true statement?

Question 29
Given the declarations

struct ListNode
{
float volume;
ListNode* next;
};
ListNode* ptr;

which of the following statements advances ptr to point to the next node of a list?

Question 30

Given the code fragment
which of the following expressions has the value 5?

a) ListNode* b) ListNode c) Float d) *ListNode e) none--the expression is invalid

Explanation / Answer

21)Ans : a

22)Ans : c

23)Ans :a

24)Ans : c

25)Ans :e

26)Ans:e

27)Ans:e

28)Ans:d

29)Ans:a

30)Ans:b

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