Remote-processing CAMBASIC Instrukcja Użytkownika Pobierz pdf (Strona 36)

Commands - 3

AND

Numeric Fun ction

SYNTAX: n = a AND b

PURPOSE: Performs bitwise or logical operation on two numbers. AND'ing is usually performed during I/O

operations to set a line low.

REMARK S: Variables a and b are in the range of 0 to 65,535 (&FF FF). When printed, numbers greater than

32,768 are negative.

Logical A ND' ing is performed during IF -THEN operations to test if all conditions ar e met.

RELATED: OR, XOR

EXAMPLE: 10 A = INP(0) :'get current status of port

20 A = A AND &FE :'set bit number 1 low

30 OUT 0,A :'output new status

40 PRINT A

RUN

Use AND in an IF-THEN statement to make sure all conditions are true.

10 IF (TEMPERATURE > 100) AND (HUMIDITY < 5) THEN GOTO ..dry

When the variable TEM PERATURE is more than 3 and variable HUM IDITY < 25 then the

condition is true. In this case, AND returns a true (non-zero) condition.

ERROR: none

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Remote-processing CAMBASIC Instrukcja Użytkownika Strona 36