Campbell Scientific CR3000 CR3000 Micrologger - Page 120
Single-Line Declarations
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Section 7. Installation operator is located in the Help files of CRBasic Editor, which is included with LoggerNet, PC400, and RTDAQ datalogger support software suites. 7.7.3.3.1 Multiple Statements on One Line Multiple short statements can be placed on a single text line if they are separated with a colon. This is a convenient feature in some programs. However, in general, programs that confine text lines to single statements are easier for humans to read. In most cases, regarding statements separated by : as being separate lines is safe. However, in the case of an implied EndIf, CRBasic behaves in what may be an unexpected manner. In the case of an If...Then...Else...EndIf statement, where the EndIf is only implied, it is implied after the last statement on the line. For example: If A then B : C : D does not mean: If A then B (implied EndIf) : C : D Rather, it does mean: If A then B : C : D (implied EndIf) 7.7.3.3.2 One Statement on Multiple Lines Long statements that overrun the CRBasic Editor page width can be continued on the next line if the statement break includes a space and an underscore ( _). The underscore must be the last character in a text line, other than additional white space. A line continuation allows a CRBasic statement (executable line of text) to span more than one file line. Note CRBasic statements are limited to 512 characters, whether or not a line continuation is used. Examples: Public A, B, _ C,D, E, F If (A And B) _ Or (C And D) _ Or (E And F) then ExitScan 7.7.3.4 Single-Line Declarations Public, Dim, and ReadOnly variables are declared at the beginning of a CRBasic program, as are Constants, Units, Aliases, StationNames, DataTables, and Subroutines. Table Rules for Names (p. 145) lists declaration names and allowed lengths. 7.7.3.4.1 Variables A variable is a packet of memory given an alphanumeric name through which pass measurements and processing results during program execution. Variables are declared either as Public or Dim at the discretion of the programmer. Public 120