1. 编写一个画填充正叶曲线的通用程序。可以指定叶片数、颜色、圆心和叶长（半径）等。 编写一个在圆周上绘制文本串的程序，输出效果类似于：（参见5.2中的6.3）中的例子） -1. Preparation of a painting filled with leaves curve is a common procedure. You can specify the number of leaves, color, center, and leaf length (radius) and

两个字符串的比较.编写一个程序，对键盘输入的两个字符串进行比较，输入的字符串长度不超过80-Comparison of the two strings. Write a program for keyboard input to compare the two strings, the input string length does not exceed 80