open hashing basic operations code example

Example: open hashing basic operations

//open hashing , insertion,deletion,searching,displaying
#include 

using namespace std;
#define n 5
class node
{
public:
    int data;
    node*next;
};
node*hasharray[n];
void init()
{
    for(int i=0;idata=value;
    temp->next=hasharray[key];
    hasharray[key]=temp;
}
int deletehash(int value)
{
    node *temp=new node;
    node*ptr=new node;
    int key=value%n;
    temp=hasharray[key];
    if(temp!=NULL)
    {
        if(temp->data==value)
        {
            ptr=temp;
            hasharray[key]=hasharray[key]->next;
            delete ptr;
            return 1;
        }
        else
        {
            while(temp->next!=NULL)
            {
                if(temp->next->data==value)
                {
                    ptr=temp->next;
                    temp->next=temp->next->next;
                    delete ptr;
                    return 1;
                }
            }
        }
    }
    return 0;
}
int searchhash(int value)
{
    int key=value%n;
    node *temp=new node;
    temp=hasharray[key];
    while(temp!=NULL)
    {
        if(temp->data==value)
        {
            return 1;
        }
        temp=temp->next;
    }
    return 0;
}
void display()
{
    for(int i=0;idata<<" ";
            temp=temp->next;
        }
        cout<>choice;
        switch(choice)
        {
        case 1:
            {
                int val;
                cout<<"enter the value you want to insert:"<>val;
                addhash(val);
                break;
            }
        case 2:
            {
               int val;
               cout<<"enter the value you want to delete:"<>val;
               int l=deletehash(val);
               if(l==1)
               {
                   cout<<"value deleted"<>val;
              int l=searchhash(val);
              if(l==1)
              {
                  cout<<"value found in hash table:"<