C++关于构造函数可向父类或者本类传参的讲解

#include <iostream>
#include <cstring>
using namespace std ; 
//英雄联盟类 
class Hero
{
 private :
 int blood ; 
 string name ;
 public :
 Hero(int blood = 100, string name = "man wang")
 {
 this->blood = blood ; 
 this->name = name ;
 }
 ~Hero()
 {
 if(this->blood < 0){
  cout << "Hero blood error!\n" << endl ;
  return ;
 }
 cout << "Hero name is:" << this->name << endl ; 
 cout << "Hero blood is :" << this->blood << endl ; 
 } 
}; 
//德玛类，继承于英雄类 
class Dema : public Hero
{
 private :
 int blood ; 
 string name ;
 public :
 Dema(int blood , string name);
 ~Dema();
};
//在实现子类的构造函数时，可以同时向父类的构造函数传参
//例如这个例子的 : Hero(58,JS),相当于向父类的构造函数传参
//当然，子类也可以给本类的的成员传参
Dema::Dema(int blood , string name) : Hero(89 , "JS") , blood(58) , name("dema")
{
 this->name = name ;
 this->blood = blood ; 
}
Dema::~Dema()
{
 if(this->name != "dema"){
 cout << "This Hero are no dema!" << endl;
 return ;
 }
 if(this->blood < 0){
 cout << "Dema blood error!\n" << endl ;
 return ;
 }
 cout << "Dmea name is:" << this->name << endl ; 
 cout << "Dema blood is :" << this->blood << endl ; 
}
int main(int argc , char **argv)
{
 Dema player1(79,"dema");
 return 0 ;
}