//父類 基類
class parent
{
};
//子類 派生類
//公有繼承
class soon1:public parent
{
   public:
   protected:
};
//保護(hù)繼承
class son2:protected parent
{
   public:
   protected:
};
//私有繼承
class son3:private parent
{
    public:
    protected:
};
//繼承和派生
//繼承：子類中沒有產(chǎn)生新的屬性和行為
//派生：派生類中有新的屬性和行為產(chǎn)生
class 子類名：繼承方式 父類名
{
};
//繼承方式  就是權(quán)限限定詞

繼承實質(zhì)與權(quán)限問題 ?

繼承的實質(zhì)：父類的數(shù)據(jù)和成員子類中有一份?
權(quán)限問題：繼承方式只會增強(qiáng)父類屬性在子類中的權(quán)限顯示

	public	protected	private
public繼承	public	protected	不可直接訪問
protected繼承	protected	protected	不可直接訪問
private繼承	private	protected	不可直接訪問

#include<iostream>
#include<string>
using namespace std;
class parent
{
public:
	void print()
	{
		cout << name << "\t" << money << endl;
	}
	string& getWide()
	{
		return wide;
	}
protected:
	string name;
	int money;
private:
	string wife;
};
//子類
class son :public parent
{
public:
	void printSon()
	{
		print();
		cout << name<<"\t"<<money<< endl;
		//cout << wife << endl;父類中的私有屬性不能直接訪問
		cout << getWide() <<endl;//間接通過父類的函數(shù)訪問
	}
protected:
};
class A
{
public:
	int a1;
protected:
	int a2;
private:
	int a3;
};
class B :public A
{
public:
	//int a1;   
protected:
	//int a2;
private:
	//int a3;不能直接訪問
};
class C :protected A
{
public:
protected:
	//int a1;   public 顯示protected
	//int a2;
private:
	//int a3;不能直接訪問
};
class D :private A
{
public:
	void print()
	{
		cout << a1 << endl;;
		cout << a2<< endl;
	}
protected:
private:
   //int a1;   public 顯示protected
	//int a2;
	//int a3;//父類的私有屬性不能直接訪問
};
//私有繼承會導(dǎo)致當(dāng)前父類 無法在孫子類有任何作用
class F :public D
{
public:
};
int main()
{
	son boy;
	boy.printSon();
	B b;
	b.a1 = 123;
	C c;
	//c.a1 = 12;
	return 0;
}