Why use the '*' marker?

Question

1.00/5 (2 votes)

See more:

Hi;
I wonder, What is difference to

C++

int* a;

and

C++

int a;

?

Why use the '*' marker?
Thanks for helps and answer...

Posted 27-Apr-13 12:14pm

Umut Comlekcioglu

Add a Solution

Comments

[no name] 27-Apr-13 18:18pm

One is an integer variable and the other is a pointer to an integer variable.

Umut Comlekcioglu 28-Apr-13 7:52am

What did you mean? Which, where used?

Philippe Mori 29-Apr-13 18:52pm

You should first read a book or a tutorial on C. Without a minimum Learning first, you won't go very far.

Style-7 1-May-13 8:25am

Go read book.

3 solutions

Add a Solution

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Kenneth Haugland · Accepted Answer · 2013-04-27T12:19:00

Solution 1

This should explain thing throughly:
http://www.cplusplus.com/doc/tutorial/pointers/#declaring_pointers[^]

Posted 27-Apr-13 12:19pm

Kenneth Haugland

Updated 27-Apr-13 13:05pm

v2

Comments

Andreas Gieriet 27-Apr-13 20:13pm

My 5!
Any tutorial on C would do since this is so basic to C.
Cheers
Andi

Stefan_Lang · Accepted Answer · 2013-04-28T21:39:00

Solution 2

The first is like a street sign pointing in one direction, and telling you Moscow is 7843 miles that way.

The second is Moscow. ;-)

P.S.: If you need any more help regarding C/C++ variable declarations, try this link:
http://cdecl.ridiculousfish.com/?q=int%2A+a%3B[^]

Posted 28-Apr-13 21:39pm

Stefan_Lang

Updated 28-Apr-13 21:44pm

v3

Comments

CPallini 29-Apr-13 3:46am

Even Napoleon missed that.
:-)

Stefan_Lang 29-Apr-13 4:26am

He tried to delete Moscow before Allocating it, so he failed due to a Null-pointer exception when trying to dereference it :D

Captain Price 1-May-13 9:35am

You are russian :D

CPallini · Accepted Answer · 2013-04-28T21:45:00

Solution 3

Pointers are one of the basic features of the C programming language. They should become part of your DNA, like being able to Google for[^].

Posted 28-Apr-13 21:45pm

CPallini

Comments

H.Brydon 1-May-13 2:41am

+5 on all counts!

Sergey Alexandrovich Kryukov 23-Aug-13 23:05pm

Great, a 5.
—SA

CPallini 24-Aug-13 2:49am

Thank you, Sergey.

Why use the '*' marker?

3 solutions

Solution 1

Solution 2

Solution 3

Add your solution here

Preview 0

Why use the '*' marker?

3 solutions

Solution 1

Solution 2

Solution 3

Add your solution here

Preview 0

Existing Members

...or Join us