#!/usr/bin/env swift;
import Foundation

func main() -> Void {
	let a:Int = 3
	let b:Int = 5
	let c:Int = 2
	let d:Double = 3.1415926
	let e:Double = 4.0

	print("-b = " + String((-b)))
	print("a + b = " + String((a + b)))
	print("a + -b = " + String((a + -b)))
	print("-a + b = " + String((-a + b)))
	print("-a + -b = " + String((-a + -b)))
	print("a - b = " + String((a - b)))
	print("a - -b = " + String((a - -b)))
	print("-a - b = " + String((-a - b)))
	print("-a - -b = " + String((-a - -b)))
	print("b * c = " + String((b * c)))
	print("b * -c = " + String((b * -c)))
	print("-b * c = " + String((-b * c)))
	print("-b * -c = " + String((-b * -c)))
	print("b / c = " + String((Double(b) / Double(c))))
	print("b / -c = " + String((Double(b) / Double(-c))))
	print("-b / c = " + String((Double(-b) / Double(c))))
	print("-b / -c = " + String((Double(-b) / Double(-c))))
	print("b // c = " + String((Int(b / c))))
	print("b // -c = " + String((Int(b / -c))))
	print("-b // c = " + String((Int(-b / c))))
	print("-b // -c = " + String((Int(-b / -c))))
	print("b % a = " + String((b % a)))
	print("b % -a = " + String((b % -a)))
	print("-b % a = " + String((-b % a)))
	print("-b % -a = " + String((-b % -a)))
	print("d + e = " + String((d + e)))
	print("d - e = " + String((d - e)))
	print("d * e = " + String((d * e)))
	print("e / d = " + String((e / d)))
	print("e // d = " + String((Int(e / d))))
	exit(EXIT_SUCCESS)
}
main()