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  1. #include <iostream>
  2. using namespace std;
  3. class base1
  4. {
  5. 	public:
  6. 		int a;
  7. 		virtual int reset(){
  8. 			a=0;
  9. 			return a;
  10. 		}
  11. };
  12.  
  13. class derived1: public base1
  14. {
  15. 	public:
  16. 		int b;
  17. 		int reset(){
  18. 			b=0;
  19. 			return b;
  20. 		}
  21.  
  22. };
  23.  
  24. template <class T>
  25. class templateClass{
  26. public:
  27. T *P;
  28.  
  29. 	T& operator = (templateClass &b )
  30. 	{
  31. 		this.p = reinterpret_cast<T>(b.p);
  32. 		return *this;
  33. 	}
  34.  
  35. 	void resetMyself(){
  36. 		P->reset();
  37. 	}
  38. };
  39.  
  40. int main() {
  41. 	// your code goes here
  42. 	templateClass<base1> *p = new templateClass<base1> () ;
  43. 	templateClass<derived1> *q = new templateClass<derived1>() ;
  44. 	p=q;
  45.  
  46. 	p->resetMyself();
  47.  
  48. 	return 0;
  49. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:44:3: error: cannot convert ‘templateClass<derived1>*’ to ‘templateClass<base1>*’ in assignment
  p=q;
   ^
stdout 
Standard output is empty
https://ideone.com/eV4cdm
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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