compiler/purify/test7.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 int f (int i)
   5 {
   6     if (i <= 1)
   7         return 1;
   8     else if (i == 2)
   9         return 2;
  10
  11     return f(i-1) + f(i-2);
  12 }
  13
  14 int main (int argc, char ** argv)
  15 {
  16     int i;
  17
  18     if (argc == 1)
  19     {
  20         printf ("Usage: %s number\n", argv[0]);
  21         return 5;
  22     }
  23
  24     i = atoi (argv[1]);
  25
  26     printf ("f(%d) = %d\n", i, f(i));
  27
  28     return 0;
  29 }