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Text File  |  1991-11-15  |  161b  |  15 lines
  1. #define A 1
  2. #ifdef A
  3. A is defined.
  4. #else
  5. A is undefined.
  6. #endif
  7. #undef A
  8. #ifdef A
  9. A is defined.
  10. #else
  11. A is undefined.
  12. #endif
  13. #line 1
  14. #line 2 abc.d
  15.