PL/SQL - select statement using cursor return one row and multiple column

declare
       cursor s 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 s;
   
      fetch s into v_id,v_name,v_sal;
      dbms_output.put_line(v_id||' '||v_name||' '||v_sal);
   
end;

OUTPUT:
     100 Steven 24000