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PT-Basic Programming Manual Ver. 1.00 21/143

3.3 Commands for looping structures

EXIT

Purpose：

To provide an alternative exit for looping structures,such as

FOR…NEXT and WHILE…WEND statements.

Syntax：

EXIT

Example：

WHILE 1

IF INKEY$=CHR$(27) THEN „if press ESC key

then quit

EXIT

END IF

WEND

PRINT "EXIT..."

Description：

EXIT can appear anywhere within the loop statement.

FOR … NEXT

Purpose：

To repeat the execution of a block of statements for a

specified number of times.

Syntax：

FOR N% = startvalue TO endvalue [STEP step]

[Statement Block]

Example：

FOR N% = 1 TO 6 STEP 1

PRINT "FOR NEXT",N%

Description：

N% is an integer variable to be used as loop counter.

Startvalue is a mumeric expression which is the initial value

for the loop counter.

Endvalue is a numeric expression which is the final value for

the loop counter.

Step is a numeric expression to be used as an

increment/decrement of the loop counter. The step is 1 by

default.

If the loop counter ever reaches or beyond the endvalue,the

program execution continues to the statement following the

NEXT statement. The Statement block will be executed again

otherwise.

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