C++之普通指针与智能指针相互转换

#include 
#include 
#include 
#include 

class Student{
public:
  Student(int d) : data(d){
		printf("xxx------>line = %d, d = %dn",__LINE__,d);
	}
	int data;
};

int main(){
	//1.general point ----> smart point 
  Student *stu = new Student(10);
	
	std::shared_ptr ptr(stu);	
	//Or:
	//std::shared_ptr ptr = std::make_shared(15);	
	printf("xxx------>line = %d, ptr->data = %dn",__LINE__,ptr->data);

		
	//2.smart point ----> general point
	Student *q;
	//<1>
	q = ptr.get();

	//Or:
	q = &(*ptr);
	printf("xxx------>line = %d, q->data = %dn",__LINE__,q->data);


	//3.make_shared ----> general point
	Student *mm = std::make_shared(15).get();
	printf("xxx------>line = %d, mm->data = %dn",__LINE__,mm->data);
	
	return 0;
}