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  1. #include <iostream>
  2.  
  3. struct Foo
  4. {
  5.     void* address;
  6.     bool testFlag;
  7.  
  8.     Foo ( ) : address(NULL), testFlag(false)
  9.     {
  10.         std::cout << "Foo default constructor called" << std::endl;
  11.     }
  12.     explicit Foo (bool Flag) : address(NULL), testFlag(Flag)
  13.     {
  14.         std::cout << "Foo (bool) constructor called" << std::endl;
  15.     }
  16.     explicit Foo (void* Pointer) : address(Pointer), testFlag(false)
  17.     {
  18.         std::cout << "Foo (void const*) constructor called" << std::endl;
  19.     }
  20.     Foo (void* Pointer, bool Flag) : address(Pointer), testFlag(Flag)
  21.     {
  22.         std::cout << "Foo (void*, bool) constructor called" << std::endl;
  23.     }
  24. };
  25.  
  26. int main(void)
  27. {
  28.     std::size_t* test = new std::size_t;
  29.  
  30.     Foo a (test);
  31.     std::cout << a.address << ' ' << a.testFlag << std::endl;
  32.  
  33.     Foo b (false);
  34.     std::cout << b.address << ' ' << b.testFlag << std::endl;
  35.  
  36.     Foo c (true);
  37.     std::cout << c.address << ' ' << c.testFlag << std::endl;
  38.  
  39.     Foo d;
  40.     std::cout << d.address << ' ' << d.testFlag << std::endl;
  41.  
  42.     Foo e (test, true);
  43.     std::cout << e.address << ' ' << e.testFlag << std::endl;
  44.  
  45.     delete test;
  46. }
Success #stdin #stdout 0s 3016KB
comments (?)
stdin
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Standard input is empty
stdout
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Foo (void const*) constructor called
0x8439008 0
Foo (bool) constructor called
0 0
Foo (bool) constructor called
0 1
Foo default constructor called
0 0
Foo (void*, bool) constructor called
0x8439008 1
https://ideone.com/qiHP9
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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