What does that means ?

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i am running through some code on web but i am little confused about the code that because i dont understand (Difficult To understand )it and i want its alternate in simple form if any also if any explanation about that part it will be bonus !!

What I have tried:

C++

typedef struct node {
	int info;
	struct node *link;
}NODE;

also,

NODE* create(NODE *start)//function to create Node

VS

void disp(NODE *start)//function of display

Posted 21-Dec-16 4:01am

mayashah

Updated 21-Dec-16 10:39am

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gggustafson 21-Dec-16 10:17am

First, I'm using C as the reference language because it seems that's what you are providing.

The first piece of code defines a NODE, as in a list. Note that node includes a reference to itself (as a pointer). That means that the list can be traversed by moving from link to link. (I personally would have named "link" as "next"; it makes more sense.)

The create function returns a new NODE. Whatever is returned should be ready to have "info" filled; "link" made to point to some other NODE (like "start"); and some existing NODE in the list made to point to this new NODE.

The disp function would (I'm guessing) traverse the list beginning at "start". This implies that "link" should be set to nul in the last NODE of the list.

Hope that helps.

mayashah 21-Dec-16 12:07pm

Absolutely :) Perfect !!

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OriginalGriff · Answer 1 · 2016-12-21T04:08:00

To be honest, if you don;t understand that, you need to go back and re-read the appropriate bits of your course - because this is pretty simple stuff that you should have covered and understood very well.

The first bit of code creates a structure - a user defined datatype if you like - which contains and integer and a pointer to another instance of the structure.
The second bit declares a function returning a pointer to the new instance of the structure that accepts a "start of list" pointer so it can (presumably) add the item into the existing list.

The last bit declares a function that returns no value, but accepts a pointer to the first element in the list that (probably) prints the whole list somewhere.

As I said: pretty basic stuff that you are almost certainly supposed to understand by now. If you don't, then re-read your course notes very carefully as this stuff is important!

Patrice T · Answer 2 · 2016-12-21T08:17:00

Those are simple form!
You need to learn properly C/C++.
Here is links to references books on C and C++ by the authors of the languages. Note than C is the ancestor of C++, so knowing C is always useful with C++.
The C Programming Language - Wikipedia, the free encyclopedia[^]
https://hassanolity.files.wordpress.com/2013/11/the_c_programming_language_2.pdf[^]
http://www.ime.usp.br/~pf/Kernighan-Ritchie/C-Programming-Ebook.pdf[^]

C++ Programing Language[^]

Albert Holguin · Answer 3 · 2016-12-21T10:39:00

Solution 3

Well, you don't specify what part you don't understand but that looks like a simple implementation of a "singly linked list[^]".

Posted 21-Dec-16 10:39am

Albert Holguin

What does that means ?

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