scheme if else Statements : In this article we introduce Scheme’s conditional expressions. The if-then and if-then-else Statements. If x = 4 and y=5. which of these statements are true? Which are false? Compound Conditions.
scheme if else : Scheme control structures are expressions, and return values.
scheme if else statements with Example
First of all, it define a variable d_no and assign 11 to it.
Checks if d_no is less than 10, in which case is false, therefor it skip d_no, and go to the next argument which is another if statement.
The second if checks if the d_no is greater than 20, d_no is not, therefor it skip the first argument d_no as well as proceed to the second argument which is expression to multiply d_no by 2, as well as the output of the multiplication is the output of this “scheme if else” program.
It prints 22 since 11 times 2 is 22.
scheme if else statements
(define d_no 11)
(if (< d_no 10)
d_no
(if (> d_no 20)
d_no
(* d_no 2)
)
)
Results: scheme if else
;Loading "ifelse.scm"... done ;Value: 22
Don’t Miss : Laravel If Else and Switch Case.
Scheme Programming/Conditionals
Truth values in Scheme
> (not #t) #f > (not #f) #t
and and or
> (and #t #f) #f > (or #f (not #f)) #t > (and (> 3 2) #t) #t > (or (<= 3 2) (zero? (- 10 3))) #f
Simple Conditionals: if
> (if #t 1 0) 1 > (if (>= 5 8) 3 (+ 7 2)) 9
More Details : Scheme - Expressions
How does `if` statement work in Scheme?
It's Uses to "Applicative programming language".
An Introduction to Scheme and its Implementation
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