C Programming Exercises, Practice, Solution : Linked List
C Linked List [30 exercises with solution]
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1. Write a program in C to create and display Singly Linked List. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 5
Input data for node 2 : 6
Input data for node 3 : 7
Expected Output :
Data entered in the list : Data = 5 Data = 6 Data = 7
2. Write a program in C to create a singly linked list of n nodes and display it in reverse order. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 5
Input data for node 2 : 6
Input data for node 3 : 7
Expected Output :
Data entered in the list are :
Data = 5
Data = 6
Data = 7
The list in reverse are :
Data = 7
Data = 6
Data = 5
3. Write a program in C to create a singly linked list of n nodes and count the number of nodes. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 5
Input data for node 2 : 6
Input data for node 3 : 7
Expected Output :
Data entered in the list are :
Data = 5
Data = 6
Data = 7
Total number of nodes = 3
4. Write a program in C to insert a new node at the beginning of a Singly Linked List. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 5
Input data for node 2 : 6
Input data for node 3 : 7
Data entered in the list are :
Data = 5
Data = 6
Data = 7
Input data to insert at the beginning of the list : 4
Data after inserted in the list are :
Data = 4
Data = 5
Data = 6
Data = 7
5. Write a program in C to insert a new node at the end of a Singly Linked List. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 5
Input data for node 2 : 6
Input data for node 3 : 7
Data entered in the list are :
Data = 5
Data = 6
Data = 7
Input data to insert at the end of the list : 8
Data, after inserted in the list are :
Data = 5
Data = 6
Data = 7
Data = 8
6. Write a program in C to insert a new node at the middle of Singly Linked List. Go to the editor
Test Data and Expected Output :
Input the number of nodes (3 or more) : 4
Input data for node 1 : 1
Input data for node 2 : 2
Input data for node 3 : 3
Input data for node 4 : 4
Data entered in the list are :
Data = 1
Data = 2
Data = 3
Data = 4
Input data to insert in the middle of the list : 5
Input the position to insert new node : 3
Insertion completed successfully.
The new list are :
Data = 1
Data = 2
Data = 5
Data = 3
Data = 4
7. Write a program in C to delete first node of Singly Linked List. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 3
Input data for node 3 : 4
Expected Output :
Data entered in the list are :
Data = 2
Data = 3
Data = 4
Data of node 1 which is being deleted is : 2
Data, after deletion of first node :
Data = 3
Data = 4
8. Write a program in C to delete a node from the middle of Singly Linked List. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data = 2
Data = 5
Data = 8
Input the position of node to delete : 2
Deletion completed successfully.
The new list are :
Data = 2
Data = 8
9. Write a program in C to delete the last node of Singly Linked List. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 1
Input data for node 2 : 2
Input data for node 3 : 3
Expected Output :
Data entered in the list are :
Data = 1
Data = 2
Data = 3
The new list after deletion the last node are :
Data = 1
Data = 2
10. Write a program in C to search an existing element in a singly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data = 2
Data = 5
Data = 8
Input the element to be searched : 5
Element found at node 2
11. Write a program in C to create and display a doubly linked list. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Expected Output :
Data entered on the list are : node 1 : 2 node 2 : 5 node 3 : 8
12. Write a program in C to create a doubly linked list and display in reverse order. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Expected Output :
Data in reverse order are : Data in node 1 : 8 Data in node 2 : 5 Data in node 3 : 2
13. Write a program in C to insert a new node at the beginning in a doubly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
node 1 : 2
node 2 : 5
node 3 : 8
Input data for the first node : 1
After insertion the new list are :
node 1 : 1
node 2 : 2
node 3 : 5
node 4 : 8
14. Write a program in C to insert a new node at the end of a doubly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
node 1 : 2
node 2 : 5
node 3 : 8
Input data for the last node : 9
After insertion the new list are :
node 1 : 2
node 2 : 5
node 3 : 8
node 4 : 9
15. Write a program in C to insert a new node at any position in a doubly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes (3 or more ): 3
Input data for node 1 : 2
Input data for node 2 : 4
Input data for node 3 : 5
Data entered in the list are :
node 1 : 2
node 2 : 4
node 3 : 5
Input the position ( 2 to 2 ) to insert a new node : 2
Input data for the position 2 : 3
After insertion the new list are :
node 1 : 2
node 2 : 3
node 3 : 4
node 4 : 5
16. Write a program in C to insert a new node at the middle in a doubly linked list. Go to the editor
Test Data and Expected Output :
Doubly Linked List : Insert new node at the middle in a doubly linked list :
----------------------------------------------------------------------------------
Input the number of nodes (3 or more ): 3
Input data for node 1 : 2
Input data for node 2 : 4
Input data for node 3 : 5
Data entered in the list are :
node 1 : 2
node 2 : 4
node 3 : 5
Input the position ( 2 to 2 ) to insert a new node : 2
Input data for the position 2 : 3
After insertion the new list are :
node 1 : 2
node 2 : 3
node 3 : 4
node 4 : 5
17. Write a program in C to delete a node from the beginning of a doubly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes (3 or more ): 3
Input data for node 1 : 1
Input data for node 2 : 2
Input data for node 3 : 3
Data entered in the list are :
node 1 : 1
node 2 : 2
node 3 : 3
After deletion the new list are :
node 1 : 2
node 2 : 3
18. Write a program in C to delete a node from the last of a doubly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes (3 or more ): 3
Input data for node 1 : 1
Input data for node 2 : 2
Input data for node 3 : 3
Data entered in the list are :
node 1 : 1
node 2 : 2
node 3 : 3
After deletion the new list are :
node 1 : 1
node 2 : 2
19. Write a program in C to delete a node from any position of a doubly linked list. Go to the editor
Test Data and Expected Output :
Doubly Linked List : Delete node from any position of a doubly linked list :
----------------------------------------------------------------------------------
Input the number of nodes (3 or more ): 3
Input data for node 1 : 1
Input data for node 2 : 2
Input data for node 3 : 3
Data entered in the list are :
node 1 : 1
node 2 : 2
node 3 : 3
Input the position ( 1 to 3 ) to delete a node : 3
After deletion the new list are :
node 1 : 1
node 2 : 2
20. Write a program in C to delete a node from the middle of a doubly linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes (3 or more ): 3
Input data for node 1 : 1
Input data for node 2 : 2
Input data for node 3 : 3
Data entered in the list are :
node 1 : 1
node 2 : 2
node 3 : 3
Input the position ( 1 to 3 ) to delete a node : 2
After deletion the new list are :
node 1 : 1
node 2 : 3
21. Write a program in C to find the maximum value from a doubly linked list. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 5
Input data for node 2 : 9
Input data for node 3 : 1
Expected Output :
Data entered in the list are :
node 1 : 5
node 2 : 9
node 3 : 1
The Maximum Value in the Linked List : 9
22. Write a program in C to create and display a circular linked list. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Expected Output :
Data entered in the list are : Data 1 = 2 Data 2 = 5 Data 3 = 8
23. Write a program in C to insert a node at the beginning of a circular linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
Input data to be inserted at the beginning : 1
After insertion the new list are :
Data 1 = 1
Data 2 = 2
Data 3 = 5
Data 4 = 8
24. Write a program in C to insert a node at the end of a circular linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
Input the data to be inserted : 9
After insertion the new list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
Data 4 = 9
25. Write a program in C to insert a node at any position in a circular linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
Input the position to insert a new node : 3
Input data for the position 3 : 7
After insertion the new list are :
Data 1 = 2
Data 2 = 5
Data 3 = 7
Data 4 = 8
26. Write a program in C to delete node from the beginning of a circular linked list. Go to the editor
Test Data :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Expected Output :
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
The deleted node is -> 2
After deletion the new list are :
Data 1 = 5
Data 2 = 8
27. Write a program in C to delete a node from the middle of a circular linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
Input the position to delete the node : 3
The deleted node is : 8
After deletion the new list are :
Data 1 = 2
Data 2 = 5
28. Write a program in C to delete the node at the end of a circular linked list. Go to the editor
Test Data and Expected Output :
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 8
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 8
The deleted node is : 8
After deletion the new list are :
Data 1 = 2
Data 2 = 5
29. Write a program in C to search an element in a circular linked list. Go to the editor
Test Data and Expected Output :
Circular Linked List : Search an element in a circular linked list :
-------------------------------------------------------------------------
Input the number of nodes : 3
Input data for node 1 : 2
Input data for node 2 : 5
Input data for node 3 : 9
Data entered in the list are :
Data 1 = 2
Data 2 = 5
Data 3 = 9
Input the element you want to find : 5
Element found at node 2
30. Write a C programming to sort a given linked list by bubble sort. Go to the editor
Test Data and Expected Output : 5
15
33
49
6
65
Input number of elements in the linked list? Input the elements in the linked list: Sorted order is: 6 15 33 49 65
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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