设计一个程序计算并显示sin(x)

#include <stdio.h>
#include <math.h>
int main()
{
    double PI  = 3.14;
    printf("%.6lf\n",sin(0));
    printf("%.6lf\n",sin(PI/6));
    printf("%.6lf\n",sin(PI/4));
    printf("%.6lf\n",sin(PI/3));
    printf("%.6lf\n",sin(PI/2));
    return 0;
}