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

process.stdout.write('How old are u?');

process.stdin.on('data', (int) => {
    actualYear=new Date().getFullYear();
    if (int<100){process.stdout.write(`You were born in ${int-actualYear} !`)}
    else {process.stdout.write('Please retry it without error')}
    process.exit()
});