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  1. #include <iostream>
  2.  
  3. template <typename T>
  4. struct big_int
  5. {
  6.     T value;
  7.     operator T() { return value; }
  8.  
  9.     big_int& operator+=(big_int const& other)
  10.     {
  11.         value += other.value;
  12.         return *this;
  13.     }
  14.  
  15.     template <typename U>
  16.     big_int& operator+=(U const& v)
  17.     {
  18.         value += v;
  19.         return *this;
  20.     }
  21.  
  22.     big_int& operator++()
  23.     {
  24.         ++value;
  25.         return *this;
  26.     }
  27.  
  28.     big_int operator++(int)
  29.     {
  30.         big_int temp = *this;
  31.         ++value;
  32.         return temp;
  33.     }
  34. };
  35.  
  36. template <typename T>
  37. struct small_int
  38. {
  39.     T value;
  40.     operator T() { return value; }
  41. };
  42.  
  43. typedef big_int<long> bigInt;
  44. typedef small_int<char> smallInt;
  45.  
  46. class Problematic
  47. {
  48. public:
  49.     Problematic(bigInt) {}
  50.     Problematic(smallInt) {}
  51. };
  52.  
  53. int main()
  54. {
  55.     bigInt bi = { 4 };
  56.     std::cout << bi << "\n";
  57.  
  58.     bi+=7;
  59.     std::cout << bi << "\n";
  60.  
  61.     long l = 4;
  62.     bi+=l;
  63.     std::cout << bi << "\n";
  64.  
  65.     ++bi;
  66.     std::cout << bi << "\n";
  67.  
  68.     bi++;
  69.     std::cout << bi << "\n";
  70.  
  71.     std::cout << (bi == l) << "\n";
  72.     std::cout << (bi == 17) << "\n";
  73. }
  74.  
Success #stdin #stdout 0s 2684KB
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Standard input is empty
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4
11
15
16
17
0
1
https://ideone.com/xlE2Mi
language:
C++ 4.3.2 (gcc-4.3.2)
created:
12 years ago
visibility:
public

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