Metrologic IS1000 Series Guia do Utilizador descarregar pdf (Página 46)

CipherLab BASIC Compiler

User's Guide

VALR

Purpose

To convert a string expression to a real number.

Syntax

A! = VALR(X$)

Remarks

"A!" is a real number variable to be assigned to the result.

"X$" is a string that includes numeric characters. The precision of the converted

result is governed by the "SET_PRECISION" function.

Example

A! = VALR("123.45")

PRINT "A = ", A!

...

REM A = 123.45

5.4.7 Creating Strings of Repeating Characters

STRING$

Purpose

To return a string containing the specified number of the requested character.

Syntax

A$ = STRING$(N%, X$)

A$ = STRING$(N%, J%)

Remarks

"A$" is a string variable to be assigned to the result.

"N%" is a numeric expression in the range of 0 to 255, indicating the number of a

character.

"J%" is a numeric expression in the range of 0 to 255, indicating the ASCII code of

a character.

"X$" may be a string variable or string constant.

Example

IDX_LENGTH% = 20

Data$ = Name$ + STRING$(IDX_LENGTH% - LEN(Name$)," ")

ADD_RECORD$(1,Data$)

' padding with space if the length of Name$ is less than IDX_LENGTH%

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 197 198

Sem comentários

Metrologic IS1000 Series Guia do Utilizador Página 46