Display and Delete in linked list is going in infinite loop (Its going in infinite loop)

help
1 
#include <iostream>
//#include <stdio.h>
//#include <conio.h>
using namespace std;

typedef struct node
{
    int data;
    node *next;
}node;

class linked_list {
    node *START, *END;

    public:
    linked_list() {
        START = nullptr;
        END = nullptr;
    }
    void insert_at_the_beginning();
    int delete_from_the_end();
    void display();
};

void linked_list::insert_at_the_beginning() {
    node *new_node = new node;
    node *temp;
    cout<<"Enter a number";
    cin>>new_node->data;
    cout<<"Successfully Inserted"<<endl;
    if(START == nullptr) {
        START = new_node;
        END = new_node;
    }
    new_node->next = START;
    START = new_node;
    cout<<START<<endl;
    temp = START;
}



int linked_list::delete_from_the_end() {
    int data;
    node *temp, *t;
    temp = START;

    while(temp != nullptr) {
        t = temp;
        temp = temp->next;
    }
    data = temp->data;
    delete temp;
    t->next = nullptr;

    return data;
}

void linked_list::display(){
    node* temp;
    temp = START;

    while (temp!=nullptr)
    {
        cout<<temp->data<<endl;
        temp = temp->next;
    }
    
}

int main() {
    int ch;
    linked_list a;
    //cout<<"1. Insert\n2.Delete\n3.Display\nEnter Your Choice:";
    

    a.insert_at_the_beginning();
    a.insert_at_the_beginning();
    a.insert_at_the_beginning();
    a.insert_at_the_beginning();
    a.insert_at_the_beginning();
    cout<<a.delete_from_the_end()<<endl;
    // cout<<a.delete_from_the_end()<<endl;
    //a.display();
    
    // do    
    // {
    //     cin>>ch;
    //     switch(ch) {
    //         case 1:
    //             a.insert_at_the_beginning();
    //             continue;
    //         case 2:
    //             cout<<a.delete_from_the_end()<<endl;
    //             continue;
    //         case 3:
    //             a.display();
    //             continue;
    //         default:
    //             cout<<"Wrong Choice";
    //     }
    //     cout<<"Enter your choice:";
    // } while (ch!=0);

    return 0;
}