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F# - if/else statement
An if/then statement can be followed by an optional else statement, which executes when the Boolean expression is false.
Syntax
The syntax of an if/then/else statement in F# programming language is −
if expr then expr else expr
Flow Diagram
Example
let a : int32 = 100 (* check the boolean condition using if statement *) if (a < 20) then printfn "a is less than 20\n" else printfn "a is not less than 20\n" printfn "Value of a is: %d" a
When you compile and execute the program, it yields the following output −
a is not less than 20 Value of a is: 100
fsharp_decision_making.htm
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