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  1.     #include <iostream>
  2.     #include <iomanip>
  3.     #include <bitset>
  4.     #include <limits>
  5.  
  6.     void flipBits(unsigned long value) {
  7.     	std::bitset<std::numeric_limits<unsigned long>::digits> bits(value);
  8.         std::cout << "Original value : 0x" << std::hex << value;
  9.  
  10.         value = bits.flip().to_ulong();
  11.         std::cout << ", Value after flip: 0x" << std::hex << value << std::endl;
  12.     }
  13.  
  14.     int main() {
  15.         flipBits(0x12345678);
  16.         flipBits(0x11223344);
  17.         flipBits(0xabcdef12);
  18.         flipBits(15);
  19.         flipBits(0xffffffff);
  20.         flipBits(0x0);
  21.         return 0;
  22.     }
  23.  
Success #stdin #stdout 0s 3340KB
comments (?)
stdin 
Standard input is empty
stdout 
Original value : 0x12345678, Value after flip: 0xedcba987
Original value : 0x11223344, Value after flip: 0xeeddccbb
Original value : 0xabcdef12, Value after flip: 0x543210ed
Original value : 0xf, Value after flip: 0xfffffff0
Original value : 0xffffffff, Value after flip: 0x0
Original value : 0x0, Value after flip: 0xffffffff
https://ideone.com/p7EY9w
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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