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  1. #include <iostream>
  2.  
  3. template <typename T>
  4. void my_swap(T &a,T &b)
  5. {
  6.     T temp = std::move(a);
  7.     a = std::move(b);
  8.     b = std::move(temp);
  9.  
  10.     /* or:
  11.     using std::swap;
  12.     swap(a, b);
  13.     */
  14. }
  15.  
  16. struct Men
  17. {
  18.     std::string name;
  19.     int age;
  20. };
  21.  
  22. template <>
  23. void my_swap<Men>(Men &a, Men &b)
  24. {
  25.     int temp = a.age;
  26.     a.age = b.age;
  27.     b.age = temp;
  28.  
  29.     /* or:
  30.     std::swap(a.age, b.age);
  31.     */
  32. }
  33.  
  34. std::ostream &operator<<(std::ostream &os, const Men &M)
  35. {
  36.     os << M.name << " is " << M.age;
  37.     return os;
  38. }
  39.  
  40. int main()
  41. {
  42.     int x{100};
  43.     int y{200};
  44.     my_swap(x, y);
  45.     std::cout << x << "," << y << std::endl;
  46.  
  47.     Men M1{"Jack", 10};
  48.     Men M2{"Tony", 20};
  49.     my_swap(M1, M2);
  50.     std::cout << M1 << "," << M2 << std::endl;
  51.  
  52.     return 0;
  53. }
Success #stdin #stdout 0s 4412KB
comments (?)
stdin 
Standard input is empty
stdout 
200,100
Jack is 20,Tony is 10
https://ideone.com/q54ClZ
language:
C++ 4.3.2 (gcc-4.3.2)
created:
5 years ago
visibility:
public

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