let new_user = [],

item = null, _remove, size;

// add user function

function add_user(user){

return new_user.push(user);

}

item = add_user('one');

item = add_user('two');

item = add_user('three');

item = add_user('four');

item = add_user('five');

// list of users

function list_of_users() {

if(new_user.length === 0){

console.log("No users found");

}else{

for(let data=0; data<new_user.length; data++) {

console.log(new_user[data]);

}

}

}

// Number of users

function size_of_users() {

size = new_user.length;

console.log('Right now total user is:' ,size);

}

list_of_users();

size_of_users();

console.log('\n');

// remove users function

function remove_users() {

if(item === null){

console.log('Sorry!! Already user is empty :)');

}else{

_remove= new_user.pop()

return _remove;

}

}

remove_users()

list_of_users();

size_of_users();