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Lära Basic Concept and Structure | Implementing Data Structures
C Structs

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Basic Concept and Structure

A linked list in C is a simple dynamic data structure consisting of elements called nodes. Each node contains data (such as a variable or object) as well as a pointer to the next node in the list.

Here's what a typical node in a singly linked list looks like in C:

If instead of a pointer to the next node you try to simply create an instance of a new node, you will get an error.

The compiler will not be able to allocate memory for such a structure, since it contains itself.

(It's like trying to look at yourself from the outside with your own eyes)

Using a pointer solves this problem because the compiler knows how much memory to allocate for a pointer variable.

Note

The last node pointer will always be NULL.

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  1. Create a structure called Node;
  2. Create a data field called data;
  3. Create a field for a pointer to the next node.

Lösning

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Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 5. Kapitel 2

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book
Basic Concept and Structure

A linked list in C is a simple dynamic data structure consisting of elements called nodes. Each node contains data (such as a variable or object) as well as a pointer to the next node in the list.

Here's what a typical node in a singly linked list looks like in C:

If instead of a pointer to the next node you try to simply create an instance of a new node, you will get an error.

The compiler will not be able to allocate memory for such a structure, since it contains itself.

(It's like trying to look at yourself from the outside with your own eyes)

Using a pointer solves this problem because the compiler knows how much memory to allocate for a pointer variable.

Note

The last node pointer will always be NULL.

Uppgift

Swipe to start coding

  1. Create a structure called Node;
  2. Create a data field called data;
  3. Create a field for a pointer to the next node.

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 5. Kapitel 2
Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
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