The C Preprocessor cont.

• Before:

  • #include “/usr/working/include/general.h”
  • main() .......

• After:

  #ifndef GENERAL_H
  
  #define GENERAL_H
  #include <stdio.h>
  #include <stdlib.h>
  typedef enum boolean_tag { FALSE, TRUE }
  Boolean_type;
  #endif
  main() .......

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