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  1. #include<stdio.h>
  2.  
  3. // #define abc()  *(f())  // 24行目のabc()++;でコンパイルエラーになる
  4. #define abc()  (*(f()))
  5.  
  6. int *f()
  7. {
  8.     static int d;
  9.     return &d;
  10. }
  11.  
  12. int main()
  13. {
  14.     int i;
  15.  
  16.     abc() = 123;
  17.     i = abc();
  18.     printf("%d\n", i);
  19.  
  20.     abc() = 321;
  21.     i = abc();
  22.     printf("%d\n", i);
  23.  
  24.     abc()++;
  25.     i = abc();
  26.     printf("%d\n", i);
  27.  
  28.     return 0;
  29. }
Success #stdin #stdout 0s 1788KB
comments (?)
stdin
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Standard input is empty
stdout
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123
321
322
https://ideone.com/n8G9Z7
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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