四則演算

　四則演算のサンプルです。

-- 四則演算 operation.lua
while not Keys.newPress.Start do
	Controls.read()
	startDrawing()
	screen.print(SCREEN_UP, 0, 0, "Press START to quit")
 
	screen.print(SCREEN_DOWN, 0, 0* 8, "1 + 2 = 3")
	screen.print(SCREEN_DOWN, 0, 1 * 8, 1 + 2)
 
	screen.print(SCREEN_DOWN, 0, 3 * 8, "3 - 2 = 1")
	screen.print(SCREEN_DOWN, 0, 4 * 8, 3 -2)
 
	screen.print(SCREEN_DOWN, 0, 6 * 8, "2 * 3 = 6")
	screen.print(SCREEN_DOWN, 0, 7 * 8, 2 * 3)
 
 	screen.print(SCREEN_DOWN, 0, 9 * 8, "6 / 2 = 3")
	screen.print(SCREEN_DOWN, 0, 10 * 8, 6 / 2)
 
        stopDrawing()
end