BEGIN   DBMS_OUTPUT.PUT_LINE ('upper_bound > lower_bound');    FOR i IN REVERSE 1..3 LOOP     DBMS_OUTPUT.PUT_LINE (i);   END LOOP;    DBMS_OUTPUT.PUT_LINE ('upper_bound = lower_bound');    FOR i IN REVERSE 2..2 LOOP     DBMS_OUTPUT.PUT_LINE (i);   END LOOP;    DBMS_OUTPUT.PUT_LINE ('upper_bound < lower_bound');    FOR i IN REVERSE 3..1 LOOP     DBMS_OUTPUT.PUT_LINE (i);   END LOOP; END;

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question

BEGIN

  DBMS_OUTPUT.PUT_LINE ('upper_bound > lower_bound');

   FOR i IN REVERSE 1..3 LOOP

    DBMS_OUTPUT.PUT_LINE (i);

  END LOOP;

   DBMS_OUTPUT.PUT_LINE ('upper_bound = lower_bound');

   FOR i IN REVERSE 2..2 LOOP

    DBMS_OUTPUT.PUT_LINE (i);

  END LOOP;

   DBMS_OUTPUT.PUT_LINE ('upper_bound < lower_bound');

   FOR i IN REVERSE 3..1 LOOP

    DBMS_OUTPUT.PUT_LINE (i);

  END LOOP;

END;

/

 

 

อธิบายคำสั่งนี้

BEGIN
DBMS_OUTPUT.PUT_LINE ('upper_bound > lower_bound');
FOR i IN REVERSE 1..3 LOOP
DBMS_OUTPUT. PUT_LINE (i);
END LOOP;
DBMS_OUTPUT. PUT_LINE ('upper_bound = 1ower_bound');
FOR i IN REVERSE 2..2 LOOP
DBMS_OUTPUT. PUT_LINE (i);
END LOOP;
DBMS_OUTPUT. PUT_LINE ('upper_bound < lower_bound');
FOR i IN REVERSE 3..1 LOOP
DBMS_OUTPUT . PUT_LINE (i) ;
END LOOP;
END ;
Transcribed Image Text:BEGIN DBMS_OUTPUT.PUT_LINE ('upper_bound > lower_bound'); FOR i IN REVERSE 1..3 LOOP DBMS_OUTPUT. PUT_LINE (i); END LOOP; DBMS_OUTPUT. PUT_LINE ('upper_bound = 1ower_bound'); FOR i IN REVERSE 2..2 LOOP DBMS_OUTPUT. PUT_LINE (i); END LOOP; DBMS_OUTPUT. PUT_LINE ('upper_bound < lower_bound'); FOR i IN REVERSE 3..1 LOOP DBMS_OUTPUT . PUT_LINE (i) ; END LOOP; END ;
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