Boolean Expressions
From SCI Wiki
Jump to navigationJump to searchThe printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Originally posted on the SCI Programming forum by Gumby
Boolean (true/false) expressions are handled as one might expect, with one subtlety. A value of 'true' is actually the result any expression evaluating to a non-zero value. I believe this is handled the same as most programming languages, but thought it was worth noting anyway.
To illustrate:
Code:
(var x)
= x 0
(if(x) // evaluates to false
Print("True: x is non-zero")
)(else
Print("False: x is zero") // this will be output
)
= x 1
(if(x) // evaluates to true
Print("True: x is non-zero") // this will be output
)(else
Print("False: x is zero")
)
= x 9387
(if(x) // also evaluates to true
Print("True: x is non-zero") // this will be output
)(else
Print("False: x is zero")
)
