IF Selection Structures

Simple if-then:

IF condition
  statement
ENDIF

Example:

IF you pay your money
  you take your chances
ENDIF

If-then-else:

IF condition
  statement
ELSE
  statement
ENDIF

Example:

IF you pay your money
  you take your chances
ELSE
  you keep your money
ENDIF

Compound if-then-else:

IF condition
  statement
ELSEIF condition
  statement
ELSE
  statement
ENDIF

Example:

IF you pay your money
  you take your chances
ELSEIF I pay my money
  I take my chances
ELSE
  we both keep our money
ENDIF

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