Rockwell-automation 2708-NBD VBASIC Language Development Kit User Manual download pdf (Page 62)

A-B VBASIC and Visual BASIC

Appendix B

Differences Between

B–14

OPEN “EMPLOYEE” FOR APPEND AS #1

Format$ = “$####.##”

A = 123.459

PRINT #1, USING Format$; A ‘Prints A to file #1 as $123.45

PRINT USING formatstring; expressionlist[{,|;}]

Prints strings or numbers using specified format. A field width is 8

characters for the LCD. INTEGERs and LONGs will output with .00 even

if .## is used. If a number is negative, a minus sign(–) will always precede

it. The following formatstring characters are not supported... **, $$, **$,

“,”. See the limits page in the A-B VBASIC manual for the maximum

USING clause and the maximum output of a single PRINT.

Format$ = “$####.##”

A = 123.459

PRINT USING Format$; A ‘Prints A as $123.45

PUT [#]filenumber[,[recordnumber][,variable]]

Writes from a variable or a buffer to a random or binary file. The required

syntax is shown above. Omitting the recordnumber such as PUT #1,

,variable is supported, but omitting both the record number and the variable

is not supported. See the chapter on Special Devices for details on specific

devices. Next page for example...

TYPE EmpType

Badge AS STRING * 8

Name AS STRING * 25

END TYPE

DIM SHARED Emp AS EmpType

OPEN “EMPLOYEE” FOR RANDOM AS #1 LEN = LEN(Emp)

Rec = Rec + 1

Emp.Badge = “1234”

Emp.Name = “Johnathan Q. Doe”

PUT #1, Rec, Emp

CLOSE #1

RANDOMIZE expression

Initializes (re–seeds) the random number generator. The expression is

required and must be numeric. The TIMER function is commonly used to

generate a pseudo–random seed as in the example below:

RANDOMIZE TIMER ‘Re–seeds random number generator.

REM remark

‘ remark

Allows explanatory remarks to be inserted in a program. Both forms of

syntax are supported.

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