这是一个图形变换的程序，按字母“Y”画一个用点组成的圆；按字母“S”画一 个用不同颜色填充的三角形；按字母“Z”画一个用不同颜色填充且带有边框图案 的矩形；按“q”键退出。-This a graphic transformation process based on the letter "Y" with a painting consisting of a round; According to the letter "S" painted a different color-filled triangle; According to the letter "Z" painted a different color but filled with a pattern of the rectangular fr a me; According to the "q" key to exit .