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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5.     int count;
  6.     char *p = (char *)&count;
  7.     char mask = 9;
  8.  
  9.     if (scanf("%d", &count) != 1) {
  10.         printf("Input error");
  11.         return 0;
  12.     }
  13.  
  14.     for (int i = 0; i < sizeof(int); i++) {
  15.         *p = *p | mask;
  16.         p++;
  17.     }
  18.  
  19.     printf("%d", count);
  20.  
  21.     return 0;
  22. }
  23.  
  24.  
  25.  
  26.  
  27.  
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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151587081
https://ideone.com/1AQeVl
Включаем определенные биты в каждом байте целого числа
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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