Skip to content

Instantly share code, notes, and snippets.

@charlierm
Last active April 25, 2024 09:11
Show Gist options
  • Save charlierm/5691020 to your computer and use it in GitHub Desktop.
Save charlierm/5691020 to your computer and use it in GitHub Desktop.
Linked list written in c++
#include <iostream>
#include <cstdlib>
class Node
{
public:
Node* next;
int data;
};
using namespace std;
class LinkedList
{
public:
int length;
Node* head;
LinkedList();
~LinkedList();
void add(int data);
void print();
};
LinkedList::LinkedList(){
this->length = 0;
this->head = NULL;
}
LinkedList::~LinkedList(){
std::cout << "LIST DELETED";
}
void LinkedList::add(int data){
Node* node = new Node();
node->data = data;
node->next = this->head;
this->head = node;
this->length++;
}
void LinkedList::print(){
Node* head = this->head;
int i = 1;
while(head){
std::cout << i << ": " << head->data << std::endl;
head = head->next;
i++;
}
}
int main(int argc, char const *argv[])
{
LinkedList* list = new LinkedList();
for (int i = 0; i < 100; ++i)
{
list->add(rand() % 100);
}
list->print();
std::cout << "List Length: " << list->length << std::endl;
delete list;
return 0;
}
@pkumar171099
Copy link

/*
I am getting error : In member function 'void linkedlist::add(std::string&)':
error: 'h' was not declared in this scope
can anyone explain me why i am getting this error message
*/
#include
#include
using namespace std;

//making class node
class node{ 
public:
friend class linkedlist;
node(){
    data = "0";
    next = NULL;
}
string data;
node* next;
};
//making class to linkedlist 
class linkedlist{

public:
linkedlist(){
    node* h = NULL;
}
//function to add data node in existing linked list
void add(string& str){
    node* newnode = new node;
    newnode->data = str;
    if(h !=NULL){
        h->next = newnode;
    }
    else{
        newnode->next = h->next;
        h->newnode;
    }
}
};

int main()
{
linkedlist l1;
string name;

//loop to enter data from user
while(true){
    cout<<"type \"q\" to exit or type name you want to add: ";
    cin>> name;
    if(name!="q"){
        l1.add(name);
    }
    else break;
}
return 0;
}

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment