ORA-06550 Error in PL/SQL
===

Well I am trying to run this script in PL/SQL. But I am constantly getting errors, I tried replacing single quotes with double quotes but no use. 

    ACCEPT p_name PROMPT "Enter Customer Name: "
    VARIABLE g_output VARCHAR2(200)
    DECLARE
       v_street VARCHAR2(30);
       v_city VARCHAR2(20);
       v_prov VARCHAR2(20);
       v_postal VARCHAR2(10);
    BEGIN
       SELECT cstreet, ccity, cprov, cpostal
         INTO v_address,v_city,v_state,v_zip
         FROM customer
        WHERE cname = "&p_name";
       :g_output := "&p_name" || " " ||v_street || " " || v_city;
       :g_output := :g_output " " || v_prov || " " || v_postal;
    END;
    /
    PRINT g_output

Error:

    Enter Customer Name: Ankur Kaushal
    old  10:     WHERE cname = "&p_name";
    new  10:     WHERE cname = "Ankur Kaushal";
    old  11:    :g_output := "&p_name" || " " ||v_street || " " || v_city;
    new  11:    :g_output := "Ankur Kaushal" || " " ||v_street || " " || v_city;
       :g_output := :g_output " " || v_prov || " " || v_postal;
                              *
    ERROR at line 12:
    ORA-06550: line 12, column 27:
    PLS-00103: Encountered the symbol " " when expecting one of the following:
    . ( * @ % & = - + ; < / > at in is mod remainder not rem
    <an exponent (**)> <> or != or ~= >= <= <> and or like
    between || indicator multiset member SUBMULTISET_
    The symbol "." was substituted for " " to continue.
    
    
    Input truncated to 14 characters
    
    G_OUTPUT
    --------------------------------------------------------------------------------


Any mistake I am making here?