/* Define a two-dimensional world-coordinate data type. */
typedef struct { float x, y; } wcPt2D;

wcPt2D dataPts [5];

void linePlot (wcPt2D dataPts [5])
{
   int k;

   glBegin (GL_LINE_STRIP);
      for (k = 0; k < 5; k++)
         glVertex2f (dataPts [k].x, dataPts [k].y);

   glFlush ( );

   glEnd ( );
}

/* Invoke a procedure here to draw coordinate axes.  */

glEnable (GL_LINE_STIPPLE);

/* Input first set of (x, y) data values. */
glLineStipple (1, 0x1C47);     // Plot a dash-dot, standard-width polyline.
linePlot (dataPts);

/* Input second set of (x, y) data values. */
glLineStipple (1, 0x00FF);     // Plot a dashed, double-width polyline.
glLineWidth (2.0);
linePlot (dataPts);

/* Input third set of (x, y) data values. */
glLineStipple (1, 0x0101);     // Plot a dotted, triple-width polyline.
glLineWidth (3.0);
linePlot (dataPts);

glDisable (GL_LINE_STIPPLE);