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  1. #include <iostream>
  2.  
  3. void swap(int &a, int &b) {
  4.     a ^= b;
  5.     b ^= a;
  6.     a ^= b;
  7. }
  8.  
  9.  
  10. int main() {
  11.     int a = 5;
  12.     int b = 1;
  13.     swap(a, b);
  14.     std::cout << a << " " << b << std::endl;
  15.     swap(a, a);
  16.     std::cout << a << std::endl;
  17. }
  18.  
Success #stdin #stdout 0s 5644KB
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https://ideone.com/WEyN26
language:
C++14 (clang 8.0)
created:
2 years ago
visibility:
public

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