Pointers

Question

Comments

.............................

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Ans : B?

Answer 1

int (*q(char *))[] means q is a function that takes char * as argument and returns a pointer to an array of integer.

Option (C) means q is a pointer to a function that takes char * as argument and returns an array of integers.

So, None of the above is correct.

Comments

@joshi plz chk now.

Are u using something other formula?

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Now your answer is correct.

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That spiral rule.

Answer 2

1. int (*q(char*)) = q is a  function which take character pointer as argument and return  pointer to Integer.

2. int *q(char*)[] = declare q as function (pointer to char) returning array of pointer to int

3. int (*q)(char*)[] = declare q as pointer function (pointer to char) returning array of int

Reffer :http://cdecl.org/

Correct would be : 

int (*q(char *))[] = declare q as function taking character pointer as argument and returning pointer to array of  int

Comments

difference is array of pointer and pointer to an array between B) and D)

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array of pointer  : each element is pointer.[inside array]

Pointer to an array : address of array.

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@Prashant. 2. and 3. are not valid C statements I tried compiling them.

int (*q(char *))[] this is correct. Still finding the reason.

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This might help understanding complex pointer type declarations 

http://www.unixwiz.net/techtips/reading-cdecl.html

Answer 3

Ans D)

C)Here q is a $\color{blue}{ pointer}$ $\color{blue}{ to}$ $\color{blue}{ a}$ $\color{blue}{ function}$ passing a pointer to a charecter as argument which returns array of integer .

B)q is a function passing passing a pointer to a charecter as argument which returns $\color{blue}{ array}$ $\color{blue}{ of}$ $\color{blue}{ integer}$ $\color{blue}{ pointer}$

https://gateoverflow.in/35193/regarding-pointers

http://c-faq.com/decl/spiral.anderson.html

https://gateoverflow.in/58327/doubt-on-array-of-pointers

Comments

@srestha B and C are not valid C statements. A function cannot return either array of integers or an array of integer pointers.

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where u got this?

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@srestha I compiled it. But I was WRONG at saying a function cannot return array.

 

Answer 4

answer is A as  its a function that accepts pointer to character as argument i.e. q(char *) and returns a pointer to integer array i.e. int *().

Comments

D.  None of these 

Corrected Declaration should be : int (*q(char *))[]