exception in plsql

1DECLARE 
2   c_id customers.id%type := 8; 
3   c_name customerS.Name%type; 
4   c_addr customers.address%type; 
5BEGIN 
6   SELECT  name, address INTO  c_name, c_addr 
7   FROM customers 
8   WHERE id = c_id;  
9   DBMS_OUTPUT.PUT_LINE ('Name: '||  c_name); 
10   DBMS_OUTPUT.PUT_LINE ('Address: ' || c_addr); 
11
12EXCEPTION 
13   WHEN no_data_found THEN 
14      dbms_output.put_line('No such customer!'); 
15   WHEN others THEN 
16      dbms_output.put_line('Error!'); 
17END; 
18