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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5.     unsigned char bits;
  6.     scanf("%hhu", &bits);
  7.  
  8.     unsigned char res, mask;
  9.     mask = 9;
  10.  
  11.     res = bits ^ mask;
  12.  
  13.     printf("%d", res);
  14.  
  15.     return 0;
  16. }
Success #stdin #stdout 0s 5296KB
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stdin
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124
stdout
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117
https://ideone.com/FpWEmK
Переключаем 0 и 3 биты переменной (инвертируем значение)
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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