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.net vs 2010 bar code Nested Loops in Java Include Code128 in Java Nested Loops




How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
Nested Loops use none none printing touse none with nonegenerate pdf-417 vb.net As soon as control is passed none none to the inner loop, the value of v_counter2 is displayed on the screen and incremented by 1. Next, the EXIT WHEN condition is evaluated. If the EXIT WHEN condition evaluates to FALSE, control is passed back to the top of the simple loop.

If the EXIT WHEN condition evaluates to TRUE, control is passed to the first executable statement outside the loop. In our case, control is passed back to the outer loop, the value of v_counter1 is incremented by 1, and the test condition of the WHILE loop is evaluated again. This logic is demonstrated by the output produced by the example:.

Microsoft Office Official Website v_counter1: v_counter2: v_cou nter2: v_counter1: v_counter2: v_counter2: v_counter1: v_counter2: v_counter2: 0 0 1 1 0 1 2 0 1. PL/SQL procedure successfully completed. Notice that for each value of v_counter1, two values of v_counter2 are displayed. For the first iteration of the outer loop, the value of v_counter1 is equal to 0. After control is passed to the inner loop, the value of v_counter2 is displayed on the screen twice, and so forth.

LOOP LABELS Earlier in the book, you read about labeling PL/SQL blocks. Loops can be labeled in a similar manner, as follows:. <<label_name>> FO none none R LOOP_COUNTER IN LOWER_LIMIT..UPPER_LIMIT LOOP STATEMENT 1; .

.. STATEMENT N; END LOOP label_name;.

The label must appear right b efore the beginning of the loop. This syntax example shows that the label can optionally be used at the end of the loop statement. It is very helpful to label nested loops, because labels improve readability.

Consider the following example:. FOR EXAMPLE BEGIN <<outer_loop>& gt; FOR i IN 1..3 LOOP DBMS_OUTPUT.

PUT_LINE ("i = ". i); <<inner_loop>> none none ; FOR j IN 1..2 LOOP DBMS_OUTPUT.

PUT_LINE ("j = ". j);. Nested Loops END LOOP inner_loop; END LOOP outer_loop; END;. For both outer and inner loop none for none s, the statement END LOOP must be used. If the loop label is added to each END LOOP statement, it is easier to understand which loop is being terminated. Loop labels can also be used when referencing loop counters.

. FOR EXAMPLE BEGIN <<outer>> F none none OR v_counter IN 1..3 LOOP <<inner>> FOR v_counter IN 1.

.2 LOOP DBMS_OUTPUT.PUT_LINE ("outer.

v_counter ". outer.v_counter); DBMS_OUTPUT .PUT_LINE ("inner.

v_counter ". inner.v_counter); END LOOP in none for none ner; END LOOP outer; END;. In this example, both the inn er and outer loops use the same loop counter, v_counter. To reference both the outer and inner values of v_counter, loop labels are used. This example produces the following output:.

outer.v_counter inner.v_count none for none er outer.

v_counter inner.v_counter outer.v_counter inner.

v_counter outer.v_counter inner.v_counter outer.

v_counter inner.v_counter outer.v_counter inner.

v_counter 1 1 1 2 2 1 2 2 3 1 3 2. PL/SQL procedure successfully completed. Your program can differentiat none for none e between two variables that have the same name because loop labels are used when the variables are referenced. If no loop labels are used when v_counter is referenced, the output produced by this script changes significantly. Basically, after control is passed to the inner loop, the value of v_counter from the outer loop is unavailable.

When control is passed back to the outer loop, the value of v_counter becomes available again.. Lab 7.2 Exercises In this example, the same nam none none e is used for two different loop counters to demonstrate another use of loop labels. However, it is not considered good programming practice to use the same name for different variables..

LAB 7.2 EXERCISES This section provides exercis none for none es and suggested answers, with discussion related to how those answers resulted. The most important thing to realize is whether your answer works. You should figure out the implications of the answers and what the effects are of any different answers you may come up with.

. Use Nested Loops In this exercise, you use nes none for none ted numeric FOR loops. Create the following PL/SQL script:. -- ch07_3a.sql, version 1.0 S ET SERVEROUTPUT ON DECLARE v_test NUMBER := 0; BEGIN <<outer_loop>> FOR i IN 1.

.3 LOOP DBMS_OUTPUT.PUT_LINE("Outer Loop"); DBMS_OUTPUT.

PUT_LINE("i = ". i); DBMS_OUTPUT.PUT_LINE("v_t none none est = ". v_test); v_test := v_test + 1 ; <<inner_loop>> FOR j IN 1..2 LOOP DBMS_OUTPUT.

PUT_LINE("Inner Loop"); DBMS_OUTPUT.PUT_LINE("j = ". j); DBMS_OUTPUT.PUT_LINE("i = none none ". i); DBMS_OUTPUT.PUT_LINE("v_t est = ". v_test); END LOOP inner_loop; none for none END LOOP outer_loop; END;. Execute the script, and then answer the following questions:. A) What output is printed on none none the screen ANSWER: The output should look like the following: Outer Loop i = 1 v_test = 0 Inner Loop j = 1 i = 1 v_test = 1 Inner Loop j = 2 i = 1.
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