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 /*write a c program to create two singly linked list and perform

union of two list and display it*/

#include<stdio.h>

#include<conio.h>

#include<alloc.h>

struct node

{

int data;

struct node *next;

}*start1=NULL,*start2=NULL,*q1,*q2,*temp1,*temp2;

int n1=0,n2=0,*p1,*p2,i,j;

void create();

void display();

void unio();

void main()

{

clrscr();

create();

display();

unio();

getch();

}

void create()

{

char ch='y';

while(ch=='y'||ch=='Y')

{

temp1=malloc(sizeof(struct node));

printf("\nenter the number for first L.L:-");

scanf("%d",&temp1->data);

temp1->next=NULL;

n1++;

if(start1==NULL)

start1=temp1;

else

{

q1=start1;

while(q1->next!=NULL)

{

q1=q1->next;

}

q1->next=temp1;

}

printf("\ndo you want to continue(Y|N):-");

scanf("\n%s",&ch);

}

ch='y';

while(ch=='y'||ch=='Y')

{

temp2=malloc(sizeof(struct node));

printf("\nenter the number for second L.L:-");

scanf("%d",&temp2->data);

temp2->next=NULL;

n2++;

if(start2==NULL)

start2=temp2;

else

{

q2=start2;

while(q2->next!=NULL)

{

q2=q2->next;

}

q2->next=temp2;

}

printf("\ndo you want to continue(Y|N):-");

scanf("\n%s",&ch);

}

}

void display()

{

p1=(int *)malloc(n1*sizeof(int));

p2=(int *)malloc(n2*sizeof(int));

if(start1==NULL)

printf("\nlinked list is empty");

else

{

printf("\nelement in first linked list are:-\n");

q1=start1;

for(i=0;i
{

if(q1!=NULL)

{

*(p1+i)=q1->data;

printf("%d\n",*(p1+i));

q1=q1->next;

}

}

}

if(start2==NULL)

printf("\nlinked list is empty");

else

{

printf("\nelement in second linked list are:-\n");

q2=start2;

for(i=0;i
{

if(q2!=NULL)

{

*(p2+i)=q2->data;

printf("%d\n",*(p2+i));

q2=q2->next;

}

}

}

}

void unio()

{

printf("\nunion of two sets are:-\n");

for(i=0;i
{

printf("%d\n",*(p1+i));

}

for(i=0;i
{

for(j=0;j
{

if((*(p2+i)==*(p1+j)))

break;

}

if(j==n1)

printf("%d\n",*(p2+i));

}

}

/*

enter the number for first L.L:-5


do you want to continue(Y|N):-y


enter the number for first L.L:-6


do you want to continue(Y|N):-y


enter the number for first L.L:-8


do you want to continue(Y|N):-y


enter the number for first L.L:-2


do you want to continue(Y|N):-n


enter the number for second L.L:-2


do you want to continue(Y|N):-y


enter the number for second L.L:-9


do you want to continue(Y|N):-n


element in first linked list are:-

5

6

8

2


element in second linked list are:-

2

9


union of two sets are:-

5

6

8

2

9

*/
7) Write a ‘C’ program to create two singly linked lists and perform the union of two lists and display it.

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