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  1. 	#include <iostream>
  2. 	#include <typeinfo>
  3.  
  4.     struct Type {};
  5.  
  6.     // 1: Array of Type*.
  7.     void func(Type *arr [3]) {
  8.         std::cout << "Type* array.\n"
  9.                   << typeid(arr).name() << "\n\n";
  10.     }
  11.  
  12.     // 2: Array of Type&.
  13.     // Illegal.
  14.     // void func(Type &arr [3]) {
  15.     //     std::cout << "Type& array.\n"
  16.     //               << typeid(arr).name() << "\n\n";
  17.     // }
  18.  
  19.     // 3: Pointer to array of Type.
  20.     void func(Type (*arr) [3]) {
  21.         std::cout << "Pointer to Type array.\n"
  22.                   << typeid(arr).name() << "\n\n";
  23.     }
  24.  
  25.     // 4: Reference to array of Type.
  26.     void func(Type (&arr) [3]) {
  27.         std::cout << "Reference to Type array.\n"
  28.                   << typeid(arr).name() << "\n\n";
  29.     }
  30.  
  31.     int main() {
  32.         // Array of Type.
  33.         Type   t_arr[3] = {};
  34.  
  35.         // Array of Type*.
  36.         Type* tp_arr[3] = { &t_arr[0], &t_arr[1], &t_arr[2] };
  37.  
  38.         // Array of Type&.
  39.         // Illegal.
  40.         // Type& tr_arr[3] = { t_arr[0], t_arr[1], t_arr[2] };
  41.  
  42.         std::cout << "Type[3]: " << typeid(t_arr).name() << "\n\n";
  43.  
  44.         func(t_arr);  // Calls #4.
  45.         func(&t_arr); // Calls #3.
  46.         func(tp_arr); // Calls #1.
  47.     }
  48.  
Success #stdin #stdout 0s 3468KB
comments (?)
stdin 
Standard input is empty
stdout 
Type[3]: A3_4Type

Reference to Type array.
A3_4Type

Pointer to Type array.
PA3_4Type

Type* array.
PP4Type
https://ideone.com/yojSRJ
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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