Campbell-scientific CR3000 Micrologger Instrukcja Użytkownika Pobierz pdf (Strona 505)

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Appendix A. CRBasic Programming Instructions

505

A.7 String Functions

Read More! See String Operations (p. 241)

& Concatenates string variables.

+ Concatenates string and numeric variables.

- Compares two strings, returns zero if identical.

A.7.1 String Operations

String Constants

Constantstringscanbeusedinexpressionsusingquotationmarks.For

example:

FirstName = "Mike"

String Addition

Stringscanbeconcatenatedusingthe'+'operator.Forexample:

FullName = FirstName + " " + MiddleName + " " + LastName

String Subtraction

String1‐String2resultsinanintegerintherangeof‐255..+255.

String Conversion to/from Numerics

Conversionofstringstonumericsandnumericstostringsisdone

automaticallywhenanassignmentismadefromastringtoanumericor

anumerictoastring,ifpossible.

String Comparison Operators

Thecomparisonoperators=,>,<,<>,>=and<=operateonstrings.

Str

ing Output Processing

TheSample()instructionwillconvertdatatypesifthesourcedatatype

isdifferentthantheSample()datatype.Stringsaredisallowedinall

outputprocessinginstructionsexceptSample().

A.7.2 String Commands

ArrayLength

Returnsthelengthofavariablearray.

Syntax

ArrayLength(Variable)

ASCII

ReturnstheASCII/ANSIcodeofacharacterinastring.

Syntax

Variable = ASCII(ASCIIString(1,1,X))

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