Question

How to invert the bits of a number 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 x = 981;
 
    print_bits(x, 16);
 
    x = ~x;
 
    std::cout << "\n";
    
    print_bits(x, 16);
}
 
 
 
 
/*
run:
 
0000001111010101
1111110000101010
 
*/

 

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