int main()
{
int ch;
char ans = 'Y';
while (ans == 'Y'||ans == 'y')
{
printf("\n---------------------------------\n");
printf("\nOperations on singly linked list\n");
printf("\n---------------------------------\n");
printf("\n1.Insert node at first");
printf("\n2.Insert node at last");
printf("\n3.Insert node at position");
printf("\n4.Sorted Linked List in Ascending Order");
printf("\n5.Delete Node from any Position");
printf("\n6.Update Node Value");
printf("\n7.Search Element in the linked list");
printf("\n8.Display List from Beginning to end");
printf("\n9.Display List from end using Recursion");
printf("\n10.Exit\n");
printf("\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
printf("\nEnter your choice");
scanf("%d", &ch);
switch (ch)
{
case 1:
printf("\n...Inserting node at first...\n");
insert_node_first();
break;
case 2:
printf("\n...Inserting node at last...\n");
insert_node_last();
break;
case 3:
printf("\n...Inserting node at position...\n");
insert_node_pos();
break;
case 4:
printf("\n...Sorted Linked List in Ascending Order...\n");
sorted_ascend();
break;
case 5:
printf("\n...Deleting Node from any Position...\n");
delete_pos();
break;
case 6:
printf("\n...Updating Node Value...\n");
update_val();
break;
case 7:
printf("\n...Searching Element in the List...\n");
search();
break;
case 8:
printf("\n...Displaying List From Beginning to End...\n");
display();
break;
case 9:
printf("\n...Displaying List From End using Recursion...\n");
rev_display(first);
break;
case 10:
printf("\n...Exiting...\n");
return 0;
break;
default:
printf("\n...Invalid Choice...\n");
break;
}
printf("\nYOU WANT TO CONTINUE (Y/N)");
scanf(" %c", &ans);
}
return 0;
}
int main (int argc, char *argv[])
{
char ch;
int choice;
int ret_val = 0;
struct node *head = NULL;
int *data = NULL;
int value = 0;
int pos = -1;
while (1) {
printf("\nMENU\n\n");
printf("1. Insert at the front\n");
printf("2. Insert at a position\n");
printf("3. Delete from the front\n");
printf("4. Delete from a position\n");
printf("5. Display\n");
printf("6. Reverse the linked list\n");
printf("7. Pairwise Swap\n");
printf("\nEnter your choice\n");
scanf("%d", &choice);
switch (choice)
{
case 1:
printf("\nEnter a value\n");
scanf(" %d", &value);
data = get_new_node(&value);
ret_val = insert_node(&head, (void *)data);
if (ret_val)
printf("\nOperation failed\n");
break;
case 2:
printf("\nEnter the position at which to insert\n");
scanf(" %d", &pos);
printf("\nEnter a value\n");
scanf(" %d", &value);
data = get_new_node(&value);
ret_val = insert_node_pos(&head, pos, (void *)data);
if (ret_val)
printf("\nOperation failed\n");
break;
case 3:
ret_val = delete_node(&head);
if (ret_val)
printf("\nOperation failed\n");
break;
case 4:
printf("\nEnter the position at which to delete\n");
scanf(" %d", &pos);
ret_val = delete_node_pos(&head, pos);
if (ret_val)
printf("\nOperation failed\n");
break;
case 5:
print_list(head);
break;
case 6:
head = reverse(head);
break;
case 7:
pairwise_swap(&head);
break;
default:
printf("\nWrong choice. Doing nothing\n");
}
printf("Do you want to continue (y/n) ??");
scanf(" %c", &ch);
if (ch == 'n' || ch == 'N') {
printf("\nBreaking the driver loop\n");
break;
}
}
return 0;
}
