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If / Then

If / Then (Statement)​

Format​

if boolean_expression then statement
if boolean_expression then statement else statement
if boolean_expression then compound_statement
if boolean_expression then compound_statement else compound_statement\

if boolean_expression then
statement(s)
end if

if boolean_expression then
statement(s)
else
statement(s)
end if

Description​

A single line IF evaluates booleanexpr, when true the statement(s) following the then is executed, otherwise execution continues on the next line. There are also two forms of a multi-line if statement, one with a true block and one with a true and a false block of code to execute.

Example​

print "Guess my letter - press a key"
# wait for the user to press a key
do
  a = key
  pause .01
until a <> 0
#
if chr(a) = "Z" then
   print "Yippie, you pressed the Z key!!!"
else
   print "darn, you pressed something else."
end if
#
end

See Also​

Begin Case / Case / End Case, Call, Continue Do, Continue For, Continue While, Do / Until, End, Exit Do, Exit For, Exit While, For / Next, For Each / Next, Function, Global, Goto, Gosub, If Then, Pause, Ref, Rem, Return, Subroutine, While / End While

History​

0.9.4gMultiple line If/Then/Else/EndIf
1.1.0.0Added single line If/Then/Else