4. C-style Linked List Example

C-style design model is using global functions and structs to hold data:

//Node.h
struct Node {
    int data;
    Node* next;
};
void insert_front(
    struct Node* node,
    struct Node* newNode )
{
    newNode->next = node->next;
    node->next = newNode;
}

#include <cstddef>
#include "Node.h"
int main ( )
{
    struct Node A;
    struct Node B;
    struct Node C;

    A.data = 12;
    B.data = 99;
    C.data = 37;

    insert_front( &A, &C );
    insert_front( &A, &B );
    C.next = NULL;

    return 0;
}