/* In this file, I have tried to reproduce the code on pages
83-84 as accurately as possible. In order to make it into a
valid C-program, a number of changes were necessary. Perhaps
the only subtle modification was the insertion of "(double)"
into the formula for  t  below. */

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

#define PI        3.1415926

#define START_T   0.0 
#define STOP_T   (2*PI)

#define LEFT     -0.10
#define BOTTOM   -1.10
#define RIGHT     6.50
#define TOP       1.10

#define STEP   400
#define WIDTH  6
   
main()
{
int i;
double x, y, t;

   printf("w %f %f %f %f\n",LEFT,BOTTOM,RIGHT,TOP);
   printf("W %d\n",WIDTH);
   
   for (i=0; i<=STEP; i++)
   {
      t =  START_T + ((double)i/STEP)*(STOP_T - START_T);
      x = t;  y = sin(2*t);
      if (i == 0) printf("m %3.6f %3.6f\n",x,y);
      else        printf("l %3.6f %3.6f\n",x,y);
   }
}