Check this code once, Is therea any remedy to this Script?

Question

1 declare
2 i number(2):=1;
3 id number(2);
4 name varchar2(25);
5 begin
6 loop
7 id:=&id;
8 name:='&name';
9 insert into emp_ramu values(id,name);
10 i:=i+1;
11 exit when i>=5;
12 end loop;
13* end;
SQL> /
Enter value for id: 10
old 7: id:=&id;
new 7: id:=10;
Enter value for name: 20
old 8: name:='&name';
new 8: name:='20';
PL/SQL procedure successfully completed.
SQL> select * from emp_ramu;
ID NAME
10 20
10 20
10 20
10 20
This code asking me to supply the values for id and name only once, when i gave the values for id and name it is inserting 4 times (same values) into the table....Is there any way, so that this loop executes 4 times and asks us values four times?

Answer 1

Same problem as on thread How can We avoid Default Prompting for scanning Values into variables?
You're missing a fundamental fact that SQL*Plus and PL/SQL code does not mix.
A PL/SQL block is send to the Oracle server process servicing you. It is parsed and executed there.
Now this block contains SQL*Plus substitution variables - those one with the & sign. Before SQL*Plus transmits the block, it sees that there are these variables. It prompts you for the values. Then it substitutes the variables with the values - and submits this changed block of PL/SQL code to the server to execute.
At the PL/SQL engine side - it cannot deal with any non-PL/SQL code. It does not know SQL*Plus commands. Just as it does not know C/C++ or Delphi or Powerbuilder or whatever client command or language set being used.
Nor can that server process, potentially running on a server platform a 1000km away, on some weird operating system, hack across the network, into your PC and magically prompt you to enter some values for the next loop iteration.
Server code runs on the server (PL/SQL). Client code/commands on the client (SQL*Plus). Do not confuse or mix the two. Standard client-server principles applies.