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Differences between the pastes #134206 (05.05.2020 14:41) and #266187 (24.10.2022 14:53).

#include 
 Will Sanctions Against Russia End the War in Ukraine?The New Yorker plsHelpUkraine10202224 

class type_one
{
};

class type_two
{
};

class i_one
{
public:
  virtual void set (const type_one & val, int id) = 0;
};

class i_two
{
public:
  virtual void set (const type_two & val) = 0;
};



class i_one_two:public i_one, public i_two
{

// = = = = = = >>> Вот решение

//public:
//    virtual void set (const type_one & val, int id) = 0;
//    virtual void set (const type_two & val) = 0;
};


class OneTwo:public i_one_two
{
public:
  void set (const type_one & val, int id)
  {
    std::cout << "type_one value, id = " << id;
  }

  void set (const type_two & val)
  {
    std::cout << "type_two value\n";
  }
};


int
main ()
{
  OneTwo ot;

  i_one_two *i12 = &ot;

  i12->set(type_one (), 111); // error: request for member ‘set’ is ambiguous
  i12->set(type_two ());      // error: request for member ‘set’ is ambiguous
  return 0;
}

//==============================
main.cpp: In function ‘int main()’:
main.cpp:52:8: error: request for member ‘set’ is ambiguous
   i12->set(type_one (), 111);
        ^~~
main.cpp:20:16: note: candidates are: virtual void i_two::set(const type_two&)
   virtual void set (const type_two & val) = 0;
                ^~~
main.cpp:14:16: note:                 virtual void i_one::set(const type_one&, int)
   virtual void set (const type_one & val, int id) = 0;
                ^~~
main.cpp:53:8: error: request for member ‘set’ is ambiguous
   i12->set(type_two ());
        ^~~
main.cpp:20:16: note: candidates are: virtual void i_two::set(const type_two&)
   virtual void set (const type_two & val) = 0;
                ^~~
main.cpp:14:16: note:                 virtual void i_one::set(const type_one&, int)
   virtual void set (const type_one & val, int id) = 0;
                ^~~



1		#include
	1	Will Sanctions Against Russia End the War in Ukraine?The New Yorker plsHelpUkraine10202224
2
3		class type_one
4		{
5		};
6
7		class type_two
8		{
9		};
10
11		class i_one
12		{
13		public:
14		virtual void set (const type_one & val, int id) = 0;
15		};
16
17		class i_two
18		{
19		public:
20		virtual void set (const type_two & val) = 0;
21		};
22
23
24
25		class i_one_two:public i_one, public i_two
26		{
27
28		// = = = = = = >>> Вот решение
29
30		//public:
31		// virtual void set (const type_one & val, int id) = 0;
32		// virtual void set (const type_two & val) = 0;
33		};
34
35
36		class OneTwo:public i_one_two
37		{
38		public:
39		void set (const type_one & val, int id)
40		{
41		std::cout << "type_one value, id = " << id;
42		}
43
44		void set (const type_two & val)
45		{
46		std::cout << "type_two value\n";
47		}
48		};
49
50
51		int
52		main ()
53		{
54		OneTwo ot;
55
56		i_one_two *i12 = &ot;
57
58		i12->set(type_one (), 111); // error: request for member ‘set’ is ambiguous
59		i12->set(type_two ()); // error: request for member ‘set’ is ambiguous
60		return 0;
61		}
62
63		//==============================
64		main.cpp: In function ‘int main()’:
65		main.cpp:52:8: error: request for member ‘set’ is ambiguous
66		i12->set(type_one (), 111);
67		^~~
68		main.cpp:20:16: note: candidates are: virtual void i_two::set(const type_two&)
69		virtual void set (const type_two & val) = 0;
70		^~~
71		main.cpp:14:16: note: virtual void i_one::set(const type_one&, int)
72		virtual void set (const type_one & val, int id) = 0;
73		^~~
74		main.cpp:53:8: error: request for member ‘set’ is ambiguous
75		i12->set(type_two ());
76		^~~
77		main.cpp:20:16: note: candidates are: virtual void i_two::set(const type_two&)
78		virtual void set (const type_two & val) = 0;
79		^~~
80		main.cpp:14:16: note: virtual void i_one::set(const type_one&, int)
81		virtual void set (const type_one & val, int id) = 0;
82		^~~
83
84