print("Hello World!") print(7 + 2) print(10 - 4) print(3 * 4) print(12.0 / 2) print("hello, " + "world") print(20 % 10) print(20 / 10) print(10 % 4) print(-10 % 4) print(10 % -4) print((-4 * -2) + 2) print(1 == 1) print(2 != 1) print(2 > 1) print(1 < 2) print(1 >= 1) print(2 <= 1) print(15 == 25) print(15 != 25) print(15 <= 25) let name = "world" if name == "world" { print("hello, world") } else { print("I'm sorry \(name), but I don't recognize you") } print((4, "dog") == (4, "dog")) print(("blue", -1) < ("purple", 1))