Question: In C programming Write a program that creates a link list storing integer values. Implement funct……

In C programming

Write a program that creates a link list storing integer values. Implement functions for the following operations:

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(1) insert a new node in the beginning of a linked list

(2) search a linked list for a specified integer value

(3) remove a node with a specified integer value.

In your output show that all three functions work properly.

Expert Answer


#include <stdio.h>

#include <stdlib.h>

struct Node


int data;

struct Node *next;


void insert_beg(struct Node** head_ref, int new_data)


/* 1. allocate node */

struct Node* new_node = (struct Node*) malloc(sizeof(struct Node));

/* 2. put in the data */

new_node->data = new_data;

/* 3. Make next of new node as head */

new_node->next = (*head_ref);

/* 4. move the head to point to the new node */

(*head_ref) = new_node;


bool search(struct Node* head, int x)


struct Node* current = head; // Initialize current

while (current != NULL)


if (current->data == x)

return true;

current = current->next;


return false;


void deleteNode(struct Node **head_ref, int key)


// Store head node

struct Node* temp = *head_ref, *prev;

// If head node itself holds the key to be deleted

if (temp != NULL && temp->data == key)


*head_ref = temp->next; // Changed head

free(temp); // free old head



// Search for the key to be deleted, keep track of the

// previous node as we need to change ‘prev->next’

while (temp != NULL && temp->data != key)


prev = temp;

temp = temp->next;


// If key was not present in linked list

if (temp == NULL) return;

// Unlink the node from linked list

prev->next = temp->next;

free(temp); // Free memory


// This function prints contents of linked list starting from head

void printList(struct Node *node)


while (node != NULL)


printf(” %d “, node->data);

node = node->next;



int main()


struct Node* head = NULL;

// Insert 7 at the beginning. So linked list becomes 7->NULL

insert_beg(&head, 7);

// Insert 1 at the beginning. So linked list becomes 1->7->NULL

insert_beg(&head, 1);

// Insert 5 at the beginning. So linked list becomes 5->1->7->NULL

insert_beg(&head, 5);

// Insert 4 at the beginning. So linked list becomes 4->5->1->7->NULL

insert_beg(&head, 4);

printf(“the list is as follows: “);



printf(“enter an element to insert in beginning”);

int ab;



printf(“nelement %d insertedn”,ab);

printf(“nnow the list is: “);



printf(“enter an element to search”);


search(head, ab)? printf(“Yes %d is presentn”,ab) : printf(“No %d is not presentn”,ab);

printf(“enter an element to delete”);


deleteNode(&head, ab);

printf(“Element %d deleted “,ab);

printf(“nnow the list is: “);


return 0;


the list is as follows 4 5 1 enter an element to insert in beginning8 element 8 inserted now the list is: 84 5 1 enter an element to search5 Yes 5 is present enter an element to delete5 Element 5 deleted now the list is: 8 4 17 Process exited after 14.19 seconds with return value0 Press any key to continue - -

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