C Programming - Typedef - Discussion

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"The secret to creativity is knowing how to hide your sources."

- Albert Einstein

In the following code what is 'P'?

typedef char *charp;
const charp P;

[A].	P is a constant	[B].	P is a character constant
[C].	P is character type	[D].	None of above

Answer: Option C

Explanation:

No answer description available for this question.

Jothi Basu said: (Sat, Aug 14, 2010 02:19:32 AM)

P is a character constant using pointer.

Ashok G said: (Fri, Aug 20, 2010 05:30:13 AM)

I guess P is a pointer to a const char.

Kumaran said: (Sun, Nov 14, 2010 01:57:40 PM)

P is the constant... It defined in the outside of main function.

Sunil said: (Sat, Dec 4, 2010 11:03:09 AM)

here p is constant bcz of usage of keyword const

Santhosh said: (Mon, Jan 31, 2011 02:21:38 AM)

her p is a pointer to a constant character

Hngn said: (Tue, Feb 8, 2011 04:38:44 AM)

p is constant chracter pointer

Ana said: (Sat, Mar 19, 2011 02:09:43 PM)

The answer is no clear to me. Can some one please explain.

Wikiok said: (Sun, Apr 10, 2011 02:48:01 PM)

typedef char charp; const charp P; so: const char P; // The value can not be changed at that memory location, but other memory locations can be used for P. P=4; //ERROR P=&a; //Works char a;

Lol said: (Fri, May 6, 2011 03:43:08 AM)

The trick with const modifier is to read the statement backwards. const charp P = const char P; So reading backwards you have P char const which is P is a pointer to a char constant.

Rocky said: (Sun, Jul 24, 2011 01:34:15 AM)

p is constant or p is character constant??? please answer!!!!

Ravi said: (Wed, Sep 21, 2011 05:01:55 PM)

P is a pointer to a constant. Because, Const char *p;.

Ganga said: (Sun, Dec 4, 2011 09:45:12 PM)

const char P; // The value can not be changed at that memory location, but other memory locations can be used for P. *P=4; //ERROR P=&a; //Works char a;

Asd said: (Mon, Dec 12, 2011 07:34:04 PM)

I think finally answer is p is a pointer to a character constant which is not in option so anwer is d.

Rupinderjit said: (Thu, Jan 5, 2012 02:21:35 PM)

p can't be pointer, since with typedef we can't modify the actual base type,we just only give new name to existing type. That's all folks.

Lijina said: (Tue, Jan 24, 2012 11:25:51 AM)

Option A is Right, 1. typedef char charptr; So charptr contain one address and charptr contain any constant; 2. const charptr p; If p='a' and &p=0x10; Now charptr contain &p(0x10) Only for address we are keeping const, not for value in that address. So P that is constant.