sub adduser
{
    print("Please enter the admin password: ");
    $epass = <STDIN>;
    chop($epass);
    if($epass eq $adminpass)
    {
        print("Please enter the user you would like to add: ");
        $usertoadd = <STDIN>;
        print("Please enter the password for the user: ");
        $passtoadd = <STDIN>;
        $userpass{$usertoadd} = $passtoadd;
        print("That password has been added to the system\n");
    }
    else
    {
        print("Wrong admin password\n");
    }
}

 print("Would you like to: \n");
    print("1. Add new user\n");
    print("2. Change admin password\n");
    print("3. Enter the system\n");

    $select = <STDIN>;

    if($select == 1)
    {
        &adduser;
    }