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  1. #include <iostream>
  2. #include <functional>
  3. using namespace std;
  4.  
  5. class CTest;
  6. void CTestSum(CTest* ptr, int a, int b);
  7.  
  8. class CTest{
  9. public:
  10. 	int i;
  11. 	void sum(int a, int b);
  12. 	CTest() : i(0), sum(CTestSum)
  13. 	{
  14. 	}
  15. };
  16.  
  17. void CTestSum(CTest* ptr, int a, int b)
  18. {
  19. 	++ptr->i;
  20. 	cout << (ptr->i)+a+b << endl;	
  21. }
  22.  
  23. int main() {
  24. 	CTest instance;
  25. 	instance.sum(2, 4);
  26.  
  27. 	return 0;
  28. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp: In constructor 'CTest::CTest()':
prog.cpp:12:18: error: class 'CTest' does not have any field named 'sum'
  CTest() : i(0), sum(CTestSum)
                  ^
stdout
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Standard output is empty
https://ideone.com/csueum
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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