PL SQL Program For TO COMPUTE FACTORIAL.

PL SQL Program For TO COMPUTE FACTORIAL.
declare 
n number(2);
i number(2);
p number(2):=1;
begin
n:=&n;
for i in 1..n loop
p:=p*i;
end loop;
dbms_output.put_line(n ||' ! = '||p);
end;