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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. class A {
  6. public:
  7. 	void sender();
  8. private:
  9. 	unsigned int score = 10;
  10. };
  11.  
  12. class B {
  13. public:
  14. 	void receiver(unsigned int & score = 10);
  15. };
  16.  
  17. void A::sender() {
  18. 	cout << "Before: " << score << endl;
  19. 	B b;
  20. 	b.receiver(score);
  21. 	cout << "After: " << score << endl;
  22. }
  23.  
  24. void B::receiver(unsigned int & score) {
  25. 	score = 100;
  26. }
  27.  
  28. int main() {
  29. 	A a;
  30. 	a.sender();
  31. 	return 0;
  32. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:14:39: error: could not convert ‘10’ from ‘int’ to ‘unsigned int&’
  void receiver(unsigned int & score = 10);
                                       ^
stdout 
Standard output is empty
https://ideone.com/IVAVCR
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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