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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.  
  5.     int arr[5] = {1,2,3,4,5};
  6.  
  7.     int i,j,bitcounts[8] = {0};
  8.  
  9.     for (i = 0; i < 5; ++i){
  10.         for (j = 0; j < 8; ++j){
  11.             if (arr[i] & (1 << j)){
  12.                 bitcounts[j]++;
  13.             }
  14.         }
  15.     }
  16.  
  17.     printf("%d", bitcounts[2]);
  18.  
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 4576KB
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stdin 
Standard input is empty
stdout 
2
https://ideone.com/qMpCP6
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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