====== IF ======

[pet] [vic20] [c64] [c16] [cplus4] [c128] [x16] [m65]

Conditional statements can be run using ''IF ... ELSE ... END IF'' blocks.

===== Single-line syntax =====

<code xcbasic>
IF <condition> THEN <statements> [ELSE <statements>]
</code>
===== Block syntax =====

<code xcbasic>
IF <condition> THEN
  <statements>
[ELSE
  <statements>]
END IF
</code>

The condition can be any expression that evaluates to a number. If the number is a nonzero value, the condition will pass, if it equals to zero, the condition will fail. Relations are expressions that evaluate to 0 if false, 255 if true:

<code xcbasic>
PRINT 1 > 0 ' -- outputs 255
</code>
  
Therefore the condition can be any numeric expression:

<code xcbasic>
IF x > 0 AND x < 11 THEN PRINT "the number is between 1 and 10"
</code>