A node is a small concept taken from the graph theory, or a node is a fundamental unit of a data structure, like a tree data structure. Every graph contains nodes which are also called vertices, and edges, where these edges are used to connect the vertices (nodes). In c programming, a node is taken as a structure that contains all required data elements on the board to construct a graph. To get a proper structure with nodes, we need edges.

In this article, you will learn about the creation of a Node in c language, how and where we use this Node with the help of code in C. And, we will also study various aspects of Node in the programming languages.

Steps to create a node in c:

Now we will write a c program solving the create Node in c.

typedef struct node{
    int value; //this is the value that a node stores
    struct node *next;  // for the node here is the current Node points to. this is how the nodes link
}node;
node *CreateNode(int val){
    node *NewNode = malloc(sizeof(node));
    newNode->value = val;
    newNode->next = NULL;
    return newNode;
}

After doing the above code, the following code will summarize many methods that will be used to solve the node problems in the C program.

typedef struct node
{
    int number;
    struct node *next;
}
node;

Creating a node in the linked list:

The above two codes are to create a node in a standard c program. If you want to create a node in a linked list in a c program, the algorithm used to make is

Start
First, create a class node containing two attributes (data and next). Here next acts as a pointer to the next Node.
Now create another class containing two more attributes (head and tail)
Now we use the function add Node (), which will add a new node to the list.
Now we use the display () function, and this will display the nodes that are present in the list.
End.

Always the essential thing is to create a node. That can be done by using the function called malloc. And this function creates a starting node for a list. Based on this algorithm, we can create a node in the linked list whenever it is needed in c or any other programming language.

For creating a new node:

To create a new node, we make the previous Node the next new Node. And with this, we declared the head pointer and made it NULL. Then we give a structure to the Node as

Struct node{ int data; struct node *next;}; struct node*head = NULL;

With this, it creates a new node; if the head node is NULL, then make the new Node the head. Else take the last Node or the end node and make it the new Node.

Types of nodes:

Originating Node- user submits the request to transmit the data to another node.
Intermediate Node- the Node that lies in the path of either two other nodes.
Originating Node- start Node.
Execution node or the destination node- end node.

The basic syntax for node creation:

The basic syntax to create a node is to use CREATE statement. And with this statement, we also must specify their properties in curly braces and separated commas.

Example statement:

CREATE (node:hello{key1: 2, key2: 4, .........}

Therefore, creating this Node defines a structure and refers to the memory allocation. Creating a node means the initialization of a value. So creating a node is very much required in graphs. A node will always contain some data and relate to another node.

Many modules related to graphs are implemented in C OR C++ with Node.js. Node.js internally has a complete collection of few dependencies which were actually used to execute a code.