// ================================================================
// John Kerl
// kerl at math dot arizona dot edu
// 2008-07-23
// ================================================================

#include <stdio.h>  // For the printf prototype
#include <string.h> // For the sscanf prototype
#include <stdlib.h> // For the exit prototype
#include <math.h>   // For the sin prototype

int main(int argc, char ** argv)
{
	int n = 40;
	int i;
	float x, y;

	if (argc == 2) {
		if (sscanf(argv[1], "n=%d", &n) != 1) {
			fprintf(stderr, "Usage: %s [n=...]\n", argv[0]);
			exit(1);
		}
	}

	for (i = 0; i < n; i++) { // Here is a comment.
		x = (float)i/n * 2.0 * M_PI;
		y = sin(x);
		printf("%3d %11.7f %11.7f\n", i, x, y);
	}

	return 0;
}