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PL SQL Program For function to return the grade of the student using cursor.

create or replace function gradeall return varchar2 is
cursor c is select m1,m2,m3 from student;
mark1 integer;
mark2 integer;
mark3 integer;
average number(5,2);

begin
open c;
loop
fetch c into mark1,mark2,mark3;
exit when c%notfound;
average:=(mark1+mark2+mark3)/3;
if(mark1<50 or mark2<50 or mark3<50) then
return('FAIL');
elsif(average>=90) then return('A+');
elsif(average>=80) then return('A');
elsif(average>=70) then return('B');
elsif(average>=60) then return('C');
else
return('D');
end if;
end loop;
close c;
end;


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