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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. enum types
  7. {
  8.     INT,
  9.     DOUBLE,
  10.     CHAR,
  11.     STRING
  12. };
  13.  
  14. struct multitype
  15. {
  16.     types type;
  17.  
  18.     union
  19.     {
  20.         int         i;
  21.         double      d;
  22.         char        c;
  23.         const char *s;
  24.     } val;
  25.  
  26.     multitype(int i)
  27.         : type(INT)
  28.     {
  29.         val.i = i;
  30.     }
  31.  
  32.     multitype(double d)
  33.         : type(DOUBLE)
  34.     {
  35.         val.d = d;
  36.     }
  37.  
  38.     multitype(char c)
  39.         : type(CHAR)
  40.     {
  41.         val.c = c;
  42.     }
  43.  
  44.     multitype(const char *s)
  45.         : type(STRING)
  46.     {
  47.         val.s = s;
  48.     }
  49. };
  50.  
  51. struct helper
  52. {
  53.     vector<multitype> arr;
  54.  
  55.     template<typename T>
  56.     helper& operator ,(T x)
  57.     {
  58.         arr.push_back(multitype(x));
  59.         return *this;
  60.     }
  61. };
  62.  
  63. void print(const helper& h)
  64. {
  65.     for (int i = 0; i < h.arr.size(); i++)
  66.     {
  67.         const multitype& x = h.arr[i];
  68.  
  69.         switch (x.type)
  70.         {
  71.         case INT:
  72.             cout << x.val.i << endl;
  73.             break;
  74.         case DOUBLE:
  75.             cout << x.val.d << endl;
  76.             break;
  77.         case CHAR:
  78.             cout << x.val.c << endl;
  79.             break;
  80.         case STRING:
  81.             cout << x.val.s << endl;
  82.             break;
  83.         }
  84.     }
  85. }
  86.  
  87. #define PRINT(...) print((helper(), __VA_ARGS__))
  88.  
  89. int main()
  90. {
  91.     PRINT(2, 4.2, 'a', "Hello");
  92. }
Success #stdin #stdout 0.01s 2816KB
comments (?)
stdin
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Standard input is empty
stdout
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2
4.2
a
Hello
https://ideone.com/isFEo
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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