有谁知道如何解决我的问题，因为我认为语法很好，但编译器向我显示了这条消息错误。我不知道这是什么，因为从我的观点来看，一切都是正确的。这些是我的程序和我的包裹规格/身体

单机版程序编译正常

CREATE or REPLACE procedure pr_resultat
IS
   CURSOR  c_notes    is
    select avg(points) moy, num_eleve
    from resultats
    group by num_eleve;

    result varchar(20) := '';
BEGIN
   for elem in c_notes LOOP
       if elem.moy < 10 then
        result := 'failure';
       elsif elem.moy >= 10 and elem.moy < 12 then
        result := 'average';
       elsif elem.moy >= 12 and elem.moy < 14 then
        result := 'pretty good';
       elsif elem.moy >= 14 and elem.moy < 16 then
        result := 'good';
       elsif elem.moy >= 16 then
        result := 'very good';
       end if;
       DBMS_OUTPUT.PUT_LINE(elem.num_eleve || '->' || result);
   end loop;
END;
/

包头编译正常

create or replace package package_prcd
is
    procedure pr_resultat;
end package_prcd;
/

包体导致编译错误

PL-00103：遇到符号“C_NOTES”，但应为以下字符之一：：=。(@%；在第6行

create or replace package body package_prcd
is
    procedure pr_resultat
    IS
    begin
        CURSOR  c_notes is  
        select avg(points) moy, num_eleve
        from resultats
        group by num_eleve;

        result varchar(20) := '';

        for elem in c_notes LOOP
           if elem.moy < 10 then
            result := 'failure';
           elsif elem.moy >= 10 and elem.moy < 12 then
            result := 'average';
           elsif elem.moy >= 12 and elem.moy < 14 then
            result := 'pretty good';
           elsif elem.moy >= 14 and elem.moy < 16 then
            result := 'good';
           elsif elem.moy >= 16 then
            result := 'very good';
           end if;
           DBMS_OUTPUT.PUT_LINE(elem.num_eleve || '->' || result);
        end loop;
    end;
end package_prcd;
/

演示：https://dbfiddle.uk/lxZvALDe