var firstName = 'John';

var job = 'instructor';

switch (job) {

case 'teacher':

case 'instructor':

console.log(firstName + ' teaches kids how to code.');

break;

case 'driver':

console.log(firstName + ' drives an uber in Lisbon.');

break;

case 'designer':

console.log(firstName + ' designs beautiful websites.');

break;

default: // if above case's false then default will execute

console.log(firstName + ' does something else.');

}

var age = 56;

switch (true) {

case age < 13:

console.log(firstName + ' is a boy.');

break;

case age >= 13 && age < 20:

console.log(firstName + ' is a teenager.');

break;

case age >= 20 && age < 30:

console.log(firstName + ' is a young man.');

break;

default:

console.log(firstName + ' is a man.');

}