|
Pardon me!! I am new here. I am unable to use addNode function. When i declare Node* it doesnt compile.
I am trying to implement a linked list in c++ without
using structures and only use pure classes.I am rusty here. Any help would be great.
head->addNode() and head.addNode() doesnt work.
#include<iostream>
#include<cstdlib>
using namespace std;
class Node
{
int data;
Node* next;
public:
Node()
{
data=0;
next=NULL;
}
void addNode(int a)
{
if(this!=NULL)
{
data=a;
next=NULL;
}
}
};
void main()
{
Node* head;
head.addNode(10);
}
|
|
|
|
|
addNode is not a member of the Node class.
class Node
{
public:
void addNode(int a);
};
void Node::addNode( int a )
{
}
your addNode is not good, you need to think things over; you do not allocate a new node; you do not assign the next pointer ...
I find that using free functions instead of class methods makes things easier when doing this; a node only contains the data (and the next pointer).
if all fails, use std::vector.
Good luck.
Nihil obstat
|
|
|
|
|
void main()
{
Node* head;
head.addNode(10);
}
Create the object in the heap first. You just declared a variable stating "I will hold address of Node object in a variable head". But, where does that object? When there is no object head-> will not work. Head.addNode() also wont work as the object is not in stack.
Correction:
void main()
{
Node* head = new Node();
head->addNode(10);
}
Object will be created in heap.
or
void main()
{
Node head;
head.addNode(10);
}
Object will allocated on stack
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
