如何输出使用本机动态 SQL 执行的 SELECT 语句的结果?

I have a string which contains SQL SELECT statement.
I wonder how can I output result of the execution of that statement on the screen, execution will be done using native dynamic SQL (EXECUTE IMMEDIATE).

示例:

DECLARE
v_stmt VARCHAR2 := 'SELECT * FROM employees';
BEGIN
EXECUTE IMMEDIATE v_stmt; -- ??? how to output result of that select on the screen.
END;

重要说明:表的结构可以是任意的.我必须编写一个接受表名作为参数的过程，所以我不能对表结构进行硬编码，也不想这样做.