代码1

#include <iostream>
using namespace std;
	
class A{

public:
	
 A(int _a):ma(_a){
   cout<<"A()"<<endl;
 }
	
 ~A(){
   cout<<"~A()"<<endl;
 }
	
protected:
	int ma;

};	

class B : public  A{

public:
	
 B(int _b):A(_b),mb(_b){
   cout<<"B()"<<endl;
 }
	
 ~B(){
   cout<<"~B()"<<endl;
 }
		
protected:
	int mb;

};	

class C : public  A{

public:
	
 C(int _c):A(_c),mc(_c){
   cout<<"C()"<<endl;
 }
	
 ~C(){
   cout<<"~C()"<<endl;
 }
		
protected:
	int mc;

};	

class D : public  B, C{

public:
	
 D(int _d):B(_d),C(_d),md(_d){
   cout<<"D()"<<endl;
 }
	
 ~D(){
   cout<<"~D()"<<endl;
 }
		
protected:
	int md;

};

	
int main(){
   D d(100);
 
  return 0;
}

//代码执行顺序
A()
B()
A()
C()
D()
~D()
~C()
~A()
~B()
~A()

D的内存结构

    原文作者：Hello_Bugs
    原文地址: https://www.cnblogs.com/erichome/p/16936667.html
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