Campbell CR850, Руководство оператора

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Section 7. Installation
148
CRBasic Example 23. String and Variable Concatenation
'Declare Variables
Dim Wrd(8) As String * 10
Public Phrase(2) As String * 80
Public PhraseNum(2) As Long
'Declare Data Table
DataTable (Test,1,-1)
DataInterval (0,15,Sec,10)
'Write phrases to data table "Test"
Sample (2,Phrase,String)
EndTable
'Program
BeginProg
Scan (1,Sec,0,0)
'Assign strings to String variables
Wrd(1) = " ":Wrd(2) = "Good":Wrd(3) = "morning":Wrd(4) = "Don't"
Wrd(5) = "do":Wrd(6) = "that":Wrd(7) = ",":Wrd(8) = "Dave"
'Assign integers to Long variables
PhraseNum(1) = 1:PhraseNum(2) = 2
'Concatenate string "1 Good morning, Dave"
Phrase(1) = PhraseNum(1)+Wrd(1)&Wrd(2)&Wrd(1)&Wrd(3)&Wrd(7)&Wrd(1)&Wrd(8)
'Concatenate string "2 Don't do that, Dave"
Phrase(2) = PhraseNum(2)+Wrd(1)&Wrd(4)&Wrd(1)&Wrd(5)&Wrd(1)&Wrd(6)&Wrd(7)&Wrd(1)&Wrd(8)
CallTable Test
NextScan
EndProg
7.7.3.10 Program Access to Data Tables
A data table is a memory location wherein data records are stored. Sometimes,
the stored data needs to be used in the CRBasic program. For example, a program
can be written to retrieve the average temperature of the last five days for further
processing. CRBasic has syntax provisions facilitating access to these table data,
or to meta data relating to the data table. Except when using the
GetRecord()
instruction ( Data Table Access and Management
(p. 495)
), the syntax is entered
directly into the CRBasic program through a variable name. The general form is:
TableName.FieldName_Prc(Fieldname Index, Records Back)
Where:
•
TableName is the name of the data table.
•
FieldName is the name of the variable from which the processed value is
derived.