PL/SQL - select statement using explicit cursor with all record

Note:

        An explicit cursor returns more than one row.

declare
       cursor v_cur is select employee_id,first_name,salary
       from emp;
       v_id emp.employee_id%type;
       v_name emp.first_name%type;
       v_sal emp.salary%type;
begin
      open v_cur;
      loop
      fetch v_cur into v_id,v_name,v_sal;
      exit when v_cur%notfound;
      dbms_output.put_line(v_id||' '||v_name||' '||v_sal);
      end loop;
      close v_cur;
end;

output:
100 Steven 24000
101 Neena 17000
102 Lex 17000
103 Alexander 9000
104 Bruce 6000
105 David 4800