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#include <iostream>
 
class A
{
protected:	
	A(std::string title, int xpos, int ypos);
};
 
class B : A
{
protected:
	//Is that correct?
	A* m_pA(std::string title, int xpos, int ypos);	
	//Why not just A* m_pA;? 
public:
	B(std::string title, int xpos, int ypos);
};
 
B::B(std::string title, int xpos, int ypos, int width, int height) : m_pA(title, 
	xpos, ypos)
{
 
}
 
int main() {
 
	return 0;
}

prog.cpp:19:1: error: prototype for ‘B::B(std::string, int, int, int, int)’ does not match any in class ‘B’
 B::B(std::string title, int xpos, int ypos, int width, int height) : m_pA(title, 
 ^
prog.cpp:9:7: error: candidates are: constexpr B::B(B&&)
 class B : A
       ^
prog.cpp:9:7: error:                 constexpr B::B(const B&)
prog.cpp:16:2: error:                 B::B(std::string, int, int)
  B(std::string title, int xpos, int ypos);
  ^

Standard output is empty