C++ 复制指针所指向的对象 make_shared shard_ptr

Posted 2022-03-04 软件工程小施同学

// make_shared example
#include <iostream>
#include <memory>
 
int main () 
 
  std::shared_ptr<int> foo1 = std::make_shared<int>();
  *foo1=1;
  std::cout << "*foo1: " << *foo1 << '\\n';
  
  std::shared_ptr<int> foo2 = std::make_shared<int>(*foo1);
  
  std::cout << "*foo2: " << *foo2 << '\\n';
  
  *foo2=2;
  
  std::cout << "*foo1: " << *foo1 << '\\n';
  std::cout << "*foo2: " << *foo2 << '\\n';
 
  return 0;