Remote-processing CAMBASIC Instrukcja Użytkownika Pobierz pdf (Strona 15)

Concepts - 9

NOTE: Attempting to enter a line with more than 24 constants will cause the remainder of the line to be

terminated. CAM BASIC does this to prevent serious program malfunction. If you create a program

on a PC and try to download a line with more than 24 constants, CAM BASIC will try to send an

error m essage. Subsequent lines will become garbled as the synchronous nature of data transmission

is lost.

When numeric constants are printed in a program listing, they are always followed by a space. The space is added by the

LIST statement and is not stored in your program.

OPERATORS

Arithmetic Operator s:

CAM BASIC is capable of m anipulating single bits within an 8– bit field, packed BC D data, 8– bit bytes, 16– bit words,

and real (floating point) numbers.

CAM BASIC assum es that all numbers contained in a program and those input by the oper ator are decimal. It can also

accept hexadecimal numbers. The prefix of the number determines its modulus. For example,

Decimal 33797 (no prefix needed)

Hexadecimal &8405 (& means hexadecimal)

Binary @11001001 (@ means binary)

The output can be in decim al, hexadecim al or binar y format:

Decimal 242

Hexadecimal E2

Additional math operators are:

Operator Operation Exam ple

+ addition X+ Y

– subtraction X– Y

* multiplication X*Y

/ division X/Y

\ integer division X\Y

mod modulo X mod Y

Expression analysis of multiplication and division is carried out first from left to right. Then addition and subtraction are

evaluated fr om left to r ight.

NOTE: Values for X and Y cannot exceed 32767 or be less than – 32768 when perform ing integer division.

If these values are exce eded, overflow will occur , data will be erroneou s and no er ror m essage will

be generated.

Relational Operators

Operator Relation Example

Tested

= equal X= Y

<> not equal X<>Y

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