C++对象的拷贝

测试代码

#include 

#include 
#include 
#include 

struct Leg
{
  int number{0};
  int color{0};
};

class Cat
{
public:
  std::list _intdata;
  std::shared_ptr leg;
};

int main()
{
  Cat cat;
  cat._intdata.push_back(23);
  cat._intdata.push_back(40);
  cat.leg = std::make_shared();
  cat.leg->color = 100;
  cat.leg->number = 200;

  std::cout<<"init cat data: "<number<number<number = 1666;
  dog._intdata.push_back(488);
  std::cout<<"init cat data: "<number<number<