C + + A class calls a member variable/member function of another class __jquery

Sometimes, there is no inherited relationship between two classes, but one class needs to refer to a member variable or member function in another class. How to do it.

Suppose you've created two classes a, B.

Class A
{public
:
	A ();
	~a ();
Public:
	int nadd;
	int add ();
};

Class B
{public
:
	b ();
	~b ();

Public:
	int nadd;
	int x;
};

Now you need to call the member variable B::nadd and b::x of Class B in the member function of Class A so that A::nadd and B::nadd are added, so you only need to include the header file of Class B in the. cpp file of Class A B.h

A.cpp

#include "stdafx.h"
#include "A.h"
#include "B.h"//header file containing class B

a::a ()
{
	Nadd = 6;//Initialization
}


a::~a ()
{
}
int A::add ()
{
	B bb;//instantiate an object
	bb.x = 5;//assigns an int result to a member variable in the object
	;
	result = Nadd + bb.nadd-bb.x;//calls the member variable in BB (constructor in B initializes b::nadd=3) return result
	;
}

The main function calls add ();

#include "stdafx.h"
#include "A.h"
#include "B.h"
#include <iostream>
using namespace std;
int _tmain (int argc, _tchar* argv[])
{
	A AA;
	int result = Aa.add ();
	cout<< result;
	System ("pause");
	return 0;
}