const x = 42;
let y = 'hello';
var z = true;
function greet(name) {
return `Hello, ${name}!`;
}
const double = (value) => value * 2;
const greeting = greet(y);
const doubled = double(x);
if (x > 0) {
console.log('positive', greeting, doubled, z);
} else {
console.log('negative', greeting, doubled, z);
}