Denso RC5 Especificaciones descargar pdf (Pagina 266)

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WHILE-WEND (Statement)

Function

Executes a head decision iteration.

Format

WHILE [<Conditional expression>]

WEND

Explanation

This statement repeats statements between a WHILE statement and a WEND

statement while <Conditional expression> is satisfied.

If <Conditional expression> is ignored, it is regarded as true (except for 0) and

the loop is infinitely repeated.

If a statement branches into a WHILE statement and a WEND statement with a

GOTO statement, for example, it normally executes the WEND statement and

returns to the WHILE statement. The program is then executed normally so

that it enters this syntax.

There is also a DO WHILE-LOOP statement which serves the same function

as WHILE-WEND, but only DO WHILE-LOOP should be used.

Related Terms

DO-LOOP, REPEAT-UNTIL

Example

DEFINT li1, li2, li3, li4, li5, li6, li7, li8, li9

DO WHILE li1 > li2 'Executes a head decision iteration.

IF li1 = 4 THEN EXIT DO 'Exits from DO-LOOP if li1 = 4.

FORli3=0TO5 'Repeats the process of FOR-NEXT 5 times.

FOR li4 = li5 TO li6

'Repeats the process of FOR-NEXT by adding 1 to the

'value of li5 every time the repetition is done until li5

becomes the value of li6.

FORli7=1TOli8STEP 2

'Repeats the process of FOR-NEXT by adding 2 to the

'value every time the repetition is done from 1 until

'it becomes li8.

IF li2 = 2 THEN EXIT FOR 'Exits from FOR-NEXT if li2 < 0.

WHILE li2 < li9 'Executes a head decision iteration.

GOSUB *samp2

li9=li9+1

WEND 'Calls a GOSUB *samp2 statement until li2 < li9.

NEXT li7 'Repeats.

NEXT 'Repeats.

li9=0

REPEAT 'Executes a tail decision iteration.

GOSUB *samp2

li9=li9+1

UNTIL li9 < 5 'Calls a GOSUB *samp2 statement until li9 < 5.

LOOP 'Repeats.

1 2 ... 261 262 263 264 265 266 267 268 269 270 271 ... 691 692

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