text: A compile error of usage of "#if"[b]@Luc Lieber[/b]
  Do you have any material or link about the "meta-flow-control"?
  A compile error of usage of "#if"[b]@long double main[/b]
  Thanks your reply.
  So you mean, my idea can't be implemented use the macro...
  A compile error of usage of "#if"[b]@Disch[/b]
  I just want to compile different code according to the dynamic macro result.
  The "prin...
  A compile error of usage of "#if"Here is the code I wrote:
  [code]
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #...
  How to find all Boolean permutations of length n[code]
  int main(int, char *[])
  {
  PrintAll(3);
  return 0;
  }[/code]
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