process.stdin.resume()
process.stdin.setEncoding('utf8')

console.log('How old are u ? ')
process.stdin.on('data', (age) =>
{
    if (age > 99 )
    {
        console.log ("Vous avez saisi un chiffre supérieur a 99 !")
        process.exit()
    }
    /*else if (age = String)
    {
        console.log ("Vous avez saisi un charactères !")
        process.exit()
    }*/
    else
    {
        annee = (2019 - age)
        console.log('You were born as ' + annee)
        process.exit()
    }
})