Singly Linked List Insert A Node at First Position Function

 Hello Students,

Today i am going to Show You How to Insert a Node at First Position or Insert Node at Beginning.

Function For Insert at Beginning or Insert at First Position:

void insert_at_beginning()

{

newnode=(struct node *)malloc(sizeof(struct node));

printf("\nEnter Number You want to Put at Beginning or First Position:");

scanf("%d",&newnode->data);

newnode->next=head;

head=newnode;

}

Full Program:

#include<stdio.h>

#include<stdlib.h>

struct node{

int data;

struct node *next;

};

struct node *newnode,*head,*temp;

void create()

{int num,i;

printf("\nHow many nodes you want to create:");

scanf("%d",&num);

for(i=0; i<num; i++)

{

newnode=(struct node *)malloc(sizeof(struct node));

printf("\nEnter Data:");

scanf("%d",&newnode->data);

newnode->next=NULL;

if(head==NULL)

{head=temp=newnode;}

else

{temp->next=newnode;

temp=temp->next;

}}}

void insert_at_beginning()

{

newnode=(struct node *)malloc(sizeof(struct node));

printf("\nEnter Number You want to Put at Beginning or First Position:");

scanf("%d",&newnode->data);

newnode->next=head;

head=newnode;

}

void display()

{

struct node *p;

p=head;

while(p->next!=NULL)

{

printf("%d->", p->data);

p=p->next;

}

printf("%d->",p->data);

}

void main()

{

    create();

    display();

    insert_at_beginning();

    display();

    getch();

}

Output:

If You Want Any other Function. then tell me in Comments!