explicitTrueFalseConstant boolean literal

Syntax   An explicitTrueFalseConstant is one of:

 (a)true
 (b)false

Example   The following determines if string s contains a period. After the for statement, found will be true if there is a period in s.

        var found : boolean := false
        for i : 1 .. length (s)
            if s = "." then
                found := true
            end if
        end for
Details   true/false values are called boolean values. A boolean variable, such as found in the above example, can have a value of either true or false.

See also   boolean type.