用CORDIC算法来计算正弦和余弦函数，稍加修改还可计算其他函数-CORDIC algorithm is used to calculate the sine and cosine functions, other functions can be calculated slightly modified

利用C语言编写的正弦函数发生的代码，实现提取正弦函数并显示，清除退出等功能-Code written in C, the sine function to extract the sine function and display clear exit functions