BASIC stamp manual v2.2

5: BASIC Stamp Command Reference – IF...THEN

BASIC Stamp Syntax and Reference Manual 2.2 • www.parallax.com • Page 231

IF…THEN

BS1 BS2 BS2e BS2sx BS2p BS2pe BS2px

IF Condition(s) THEN Address

IF Condition(s) THEN Statement(s) { ELSE Statement(s) }

IF Condition(s) THEN

Statement(s)

{ ELSEIF Condition(s) THEN

Statement(s)… }

{ ELSE

Statement(s) }

ENDIF

Function

Evaluate Condition(s) and, if true, go to the Address or execute the

Statement(s) following THEN, otherwise process the ELSEIF/ELSE

block(s), if provided. ELSEIF is optional and works just like IF, but is only

evaluated if the Condition(s) in the preceding IF is false. The ELSE block is

optional and is executed if all Condition(s) in all preceding IF/ELSEIFs are

false. The program will continue at the next line of code (single-line

syntax) or the line that follows ENDIF (multi-line syntax) unless Address or

Statement(s) are executed that cause the program to jump.

• Condition is a statement, such as “x = 7” that can be evaluated as

true or false. Condition can be a very simple or very complex

relationship, as described below.

• Address is a label that specifies where to go in the event that

Condition(s) is true.

• Statement is any valid PBASIC instruction. Multiple statements

may be placed on the same line (though not recommended) by

separating each statement with a colon ( : ).

All

NOTE: PBASIC 1.0 and

PBASIC 2.0 only support

IF Condition(s) THEN Address.

PBASIC 2.5 supports all syntax

variations.

All