#include<stdio.h>
#include<math.h>
// Program to print a pretty sin wave using stars

int main(int argc, char ** argv)
{
	double angle;	/* Angle we are plotting */
	double pi= 2* asin(1);  /* Calculate value of pi */
	int i;
	for (angle= 0; angle < 2.0*pi; angle+= pi/10) {
		for (i= 0; i < 30*(1.0+ sin(angle)); i++) {
			printf (" ");
		}
		printf ("*\n");
	}

	return 0;
}