/*  Make Sin Curve  */

#include <stdio.h>
#include <math.h>

int main(void)
{
    int i,n;
    double pi,x,y;
    pi=3.141592653;
    n=65;
    for (i=1; i<=n; i++)  {
        x=(1.0*(i-1))/(1.0*(n-1))*4.0*pi;
        y=sin(x);
        printf("%f\t%f\n",x,y);
    }

    return 0;
}