Keyboard input/Obtain a Y or N response: Difference between revisions

=={{header|Wren}}==

<lang ecmascript>import "io" for Stdin, Stdout

Stdin.isRaw = true // input is neither echoed nor buffered in this mode

System.print("Press Y or N")

Stdout.flush()

var byte

while ((byte = Stdin.readByte()) && !"YNyn".bytes.contains(byte)) {}

var yn = String.fromByte(byte)

System.print(yn)

Stdin.isRaw = false</lang>

{{out}}

Sample run:

<pre>

Press Y or N

y

</pre>