#!/usr/bin/env node;
const main = async () => {
	const a = 3;
	const b = 5;
	const c = 2;
	const d = 3.1415926;
	const e = 4.0;

	console.log(["-b = ", (-b)].join(''));
	console.log(["a + b = ", (a + b)].join(''));
	console.log(["a + -b = ", (a + -b)].join(''));
	console.log(["-a + b = ", (-a + b)].join(''));
	console.log(["-a + -b = ", (-a + -b)].join(''));
	console.log(["a - b = ", (a - b)].join(''));
	console.log(["a - -b = ", (a - -b)].join(''));
	console.log(["-a - b = ", (-a - b)].join(''));
	console.log(["-a - -b = ", (-a - -b)].join(''));
	console.log(["b * c = ", (b * c)].join(''));
	console.log(["b * -c = ", (b * -c)].join(''));
	console.log(["-b * c = ", (-b * c)].join(''));
	console.log(["-b * -c = ", (-b * -c)].join(''));
	console.log(["b / c = ", (b / c)].join(''));
	console.log(["b / -c = ", (b / -c)].join(''));
	console.log(["-b / c = ", (-b / c)].join(''));
	console.log(["-b / -c = ", (-b / -c)].join(''));
	console.log(["b // c = ", (Math.trunc(b / c))].join(''));
	console.log(["b // -c = ", (Math.trunc(b / -c))].join(''));
	console.log(["-b // c = ", (Math.trunc(-b / c))].join(''));
	console.log(["-b // -c = ", (Math.trunc(-b / -c))].join(''));
	console.log(["b % a = ", (b % a)].join(''));
	console.log(["b % -a = ", (b % -a)].join(''));
	console.log(["-b % a = ", (-b % a)].join(''));
	console.log(["-b % -a = ", (-b % -a)].join(''));
	console.log(["d + e = ", (d + e)].join(''));
	console.log(["d - e = ", (d - e)].join(''));
	console.log(["d * e = ", (d * e)].join(''));
	console.log(["e / d = ", (e / d)].join(''));
	console.log(["e // d = ", (Math.trunc(e / d))].join(''));
}
main().catch( e => { console.error(e) } );