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

/* Please make two changes to this code:
(1) evaluate the function f(x) = x*exp(-x)
(2) use a spacing of 0.1 instead of a spacing of 1.0
(3) Then compile, run, pipe the result to a file, and plot it.
*/

int main(void) {
  float x, y;
  int i;

  fprintf(stdout,"# Hello class, I shall now evaluate f(x) = x.\n");
  fprintf(stdout,"# i \t x \ty\n");
  for(i = 0; i < 10; i++) {
    x = 1.0 * i;
    y = x;
    fprintf(stdout,"%d\t%g\t%g\n",i,x,y);
  }
  return 0;
}