#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
  int iter;      /* iteration counter */
  double x;             /* population */
  double r;          /* growth factor */
  
  for(r=0.01; r<=1; r+=0.002)
  {
    x = 0.5;
    for(iter=0; iter<1100; iter++)
    {
      x = 4*r*x*(1-x);
      if(iter>100)
	printf("%f %f\n", r, x);
    }
  }
  return(0);
}