Comment on the following?
const int *ptr;

A) We cannot change the value pointed by ptr. B) We cannot change the pointer ptr itself. C) Both of the above D) We can change the pointer as well as the value pointed by it.

Answer & Solution

Correct Answer: Option A

int * : pointer to int
int const * : pointer to const int
int * const : const pointer to int
int const * const : const pointer to const int

Now the first const can be on either side of the type so:

const int * == int const *
const int * const == int const * const

So the above declaration is pointer to const int. Which means,we cannot change the value pointed by ptr.

Question posted by Examveda

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3 Comments

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Amit Verma 4 years ago

I do not think that it will not allow changing the value of a variable whose address will be stored in a constant pointer.

Kumar Chandan 10 years ago

int const * : Point a constant int so its can not be changed.

Saloni Jagtap 10 years ago

please provide explanation for this question

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