Learn Linked List Implementation in C/C++ with User-Defined Data Types | DSA Tutorial

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This article is a summary of a YouTube video "2.4 Linked List Implementation in C/C++ | Creation and Display | DSA Tutorials" by Jenny's Lectures CS IT
TLDR Creating and traversing a linked list with user-defined data types, pointers, and malloc is demonstrated in the video.

Key insights

  • 🧠
    Understanding the basics of linked lists, dynamic memory allocation, pointers, and structures is essential for implementing a singly linked list in C/C++.
  • 💡
    The use of dynamic memory allocation in C/C++ allows for the efficient allocation of memory based on the size of the data type, optimizing memory usage.

Q&A

  • What is a linked list?

    — A linked list is a data structure that consists of nodes, where each node contains data and a pointer to the next node in the list.

  • How do you create a linked list in C?

    — To create a linked list in C, you need to define a user-defined data type, allocate memory using malloc, and use pointers to connect the nodes.

  • What is the purpose of the head pointer in a linked list?

    — The head pointer stores the address of the first node in a linked list, allowing you to traverse the list and access its elements.

  • How do you dynamically allocate memory in C?

    — In C, you can dynamically allocate memory using the malloc function, which creates a memory block of the specified size and returns its starting address.

  • How do you insert a new node in a linked list?

    — To insert a new node in a linked list, you need to create a new node, update the pointers of the previous and next nodes, and adjust the head pointer if necessary.

Timestamped Summary

  • 🤔
    00:00
    Create a linked list with three nodes using a user-defined data type, a head pointer, and pointers to traverse the list.
  • 🤔
    05:25
    Allocating memory for a new node with malloc and typecasting it to a pointer to a struct node.
  • 🤔
    09:01
    Allocating memory and inserting nodes into a linked list is done by creating a node, asking for user input, and using a pointer to access the structure members.
  • 🔗
    12:56
    Create a new node and update the head pointer to it, access the structure of a node using a pointer.
  • 🔗
    15:44
    Setting up a new node with a value of 300 in a linked list of two existing nodes requires two pointers and setting the head and temp to the new node.
  • 🔧
    20:16
    Set temp to new node and add to list if user presses 1, otherwise exit program.
  • 🤔
    23:09
    Initialize a temp pointer and use a while loop to print the values 5, 4, 8, 9 from user-created nodes.
  • 🔁
    26:22
    Temp is assigned a value, printed, and then reassigned until it is null, and nodes are created, traversed, and counted.
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This article is a summary of a YouTube video "2.4 Linked List Implementation in C/C++ | Creation and Display | DSA Tutorials" by Jenny's Lectures CS IT
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