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  1. #include <stdio.h>
  2.  
  3. #define DATA_001 
  4. #define DATA_002
  5. #define DATA_003
  6. #define DATA_004
  7. #define DATA_005
  8.  
  9. #if (defined(DATA_001)+defined(DATA_002) \
  10.     +defined(DATA_003)+defined(DATA_004) \
  11.     +defined(DATA_005)) != 1
  12. #error "Wrong number of selected cases"
  13. #endif
  14.  
  15. int main(void) {
  16. 	// your code goes here
  17. 	return 0;
  18. }
  19.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c:12:2: error: #error "Wrong number of selected cases"
 #error "Wrong number of selected cases"
  ^
stdout
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Standard output is empty
https://ideone.com/HjwzuD
defined > long version
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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