JJ Comparison Example

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JJ Comparison Example
This page shows you a particular situation which requires two punctuation characters:

'(' left parenthesis
')' right parenthesis

COMPARISON EXAMPLE

Whenever you are doing a comparison of two values (with any of the comparison operators, <, less than <=, less than or equal to >, greater than >=, greater than or equal to ==, equal to, or !=, not equal to) you will need to put a left and right parentheses around the operation. For example:

        Box b ofType int        -- Create an integer box named 'b'.
        Outputln "Enter a num:" -- Ask your user to enter a number.
        Input b                 -- Read in their number.

        If (b < 0) then         -- NOTICE: parentheses around the comparison
           Outputln " negative"
        ElseIf (b == 0) then    -- NOTICE: again, parenthese are required
           Outputln "zero"
        Else
           Outputln "positively"
        EndIf

        -- You are not expected to understand this example on your
        -- first day.  But you may want to return here sometime
        -- during your first week.

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