Metrologic IS1000 Series Betriebsanweisung PDF herunterladen (Seite 42)

CipherLab BASIC Compiler

User's Guide

Remarks

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

"N%" and "M%" are numeric expressions in the range of 0 to 255.

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

MID$ function returns a string of length M characters from X$ beginning with the

Nth character.

If M is omitted, or if there are fewer than M characters to the right of the Nth

character, all the characters beginning with the Nth character to the rightmost are

returned.

If M is equal to zero, or if N is greater than the length of X$, then MID$ returns a

null string.

Example

String1$ = "11025John Thomas, Accounting Manager"

String2$ = ","

EmployeeName$ = MID$(String1$, 6, INSTR(String1$, String2$) - 6)

' the employee's name starts at the sixth character

RIGHT$

Purpose

To retrieve a given number of characters from the right side of the target string.

Syntax

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

Remarks

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

"N%" is a numeric expression in the range of 0 to 255.

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

If N is larger than the length of X$, the entire string is returned.

If N is zero, the null string (with length 0) is returned.

Example

String1$ = "11025John Thomas, Accounting Manager"

String2$ = ","

Title$ = RIGHT$(String1$, LEN(String1$) - INSTR(String1$, String2$))

TRIM_LEFT$

Purpose

To return a copy of a string with leading blank spaces stripped away.

Syntax

A$ = TRIM_LEFT$(X$)

Remarks

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

"X$" is a string variable that may contain some space characters at the beginning.

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Metrologic IS1000 Series Betriebsanweisung Seite 42