ELSE - QB64Official/qb64 GitHub Wiki

ELSE is used in IF...THEN or SELECT CASE statements to offer an alternative to other conditional statements.

Syntax

Single-line syntax:

IF condition THEN {code} ELSE {alternative-code}

Block syntax:

IF condition THEN

{code}

⋮

ELSEIF condition2 THEN

{code}

⋮

ELSE

{alternative-code}

⋮

END IF

Description

  • ELSE is used in a IF block statement to cover any remaining conditions not covered in the main block by IF or ELSEIF.
  • CASE ELSE covers any remaining conditions not covered by the other CASE statements.
  • ELSE can also be used as a false comparison to a true IF statement when a condition will only be true or false.
  • Other IF...THEN statements can be inside of an ELSE statement.

Example(s)

One line IF statement


IF x = 100 THEN PRINT "100" ELSE PRINT "Not 100"

Multiple line IF statement block


IF x = 100 THEN ' code executed MUST be on next statement line!
   PRINT "100"
ELSE PRINT "Not 100"
END IF

To alternate between any two values (as long as the value after ELSE is the same as the condition)


IF a = 3 THEN a = 5 ELSE a = 3

See Also