#!/usr/bin/env node;
const main = async () => {
	let a = 3;

	++a;
	console.log(["++a: ", a].join(''));
	--a;
	console.log(["--a: ", a].join(''));

	a += 2;
	console.log(["a += 2 : ", a].join(''));
	a *= 3;
	console.log(["a *= 3 : ", a].join(''));
	a -= 4;
	console.log(["a -= 4 : ", a].join(''));
	a /= 5;
	console.log(["a /= 5 : ", a].join(''));
}
main().catch( e => { console.error(e) } );