The various loops
;
x = x + 1
LOCATE 1,1 : PRINT x
LOOP
LOOP UNTIL x = 20
;
LOCATE; 1,1 : PRINT X
NEXT
x = x + 1
WEND
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| CHAPTER 2 The various loops |
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| Get off the net if you still think it is happy hour(At least until you settle down). Here is your lesson. ; |
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| The first of the many loops is the DO - LOOP loop. It runs eternally ,doing it's instructions ,stopping when you say so.It goes like this : | ||||||||||||||||||||
| DO x = x + 1 LOCATE 1,1 : PRINT x LOOP |
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| If you want it to stop when x reaches 20, type : LOOP UNTIL x = 20 |
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| Many of the greatest programmers of all time in QBASIC used this loop alot. ; |
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| Another loop, refered to as the FOR - NEXT loop was also used alot. It's syntax is : | ||||||||||||||||||||
| FOR X = 0 TO 20 STEP 1 LOCATE; 1,1 : PRINT X NEXT |
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| In this loop, the computer counts from 0 to 20, STEP deciding how much is added every time. This is stored in a variable, say X. |
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| The next loop is self-explanatory. | ||||||||||||||||||||
| WHILE X < 270 x = x + 1 WEND |
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| I don't really use it that much, since the other two are pretty much enough. | ||||||||||||||||||||
| Here is a gem of a loop. It is called the Africa - Asia loop. It brings you on a trip from Asia to Africa and back. Have fun! | ||||||||||||||||||||
| P.S: Once you understand, look at my nice logo below. |
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