Question

How to remove the lowest order bit in C++

Answer 1

#include <iostream>

void print_bits(int n, int size) {
    for (int i = 1 << (size - 1); i > 0; i = i / 2) {
        (n & i) ? std::cout << "1" : std::cout << "0";
    }
}
   
int main(void)
{
    int n = 2664;
      
    print_bits(n, 16);
    std::cout << "\n";
      
    n &= (n - 1);
    print_bits(n, 16);
}
    
  
   
   
/*
run:
  
0000101001101000
0000101001100000
   
*/

 

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