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  1. #include <stdio.h>
  2.  
  3. #define DECLARE() int state = 0
  4.  
  5. #define BEGIN switch (state) { \
  6.                       case 0:
  7.  
  8. #define YIELD(val) do { \
  9.                         state = __LINE__;   \
  10.                         return val;         \
  11.                       case __LINE__:        \
  12.                         ;                   \
  13.                       } while (0)
  14.  
  15. #define END }
  16.  
  17. char* next()
  18. {
  19. 	static DECLARE();
  20.     BEGIN;
  21.         YIELD("мама");
  22.         YIELD("мыла");
  23.         YIELD("лалку");
  24.     END;
  25.     return 0;
  26. }
  27. char* kakoi()
  28. {
  29. 	static DECLARE();
  30. 	static int i;
  31.     BEGIN;
  32.         YIELD("Какой ");
  33.         YIELD("yield ");
  34.         for (i=0;i<3;++i)
  35.             YIELD(")");
  36.     END;
  37.     return 0;
  38. }
  39. int main()
  40. {
  41. 	char* str;
  42.     while (str = next()) {
  43.         printf("%s ", str);
  44.     }
  45.     putchar('\n');
  46.     while (str = kakoi()) {
  47.         printf("%s", str);
  48.     }
  49.  
  50.     return 0;
  51. }
Success #stdin #stdout 0s 5512KB
comments (?)
stdin
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Standard input is empty
stdout
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мама мыла лалку 
Какой yield )))
https://ideone.com/nFyUxi
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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