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  1. #include <iostream>
  2. #include<string.h>
  3. using namespace std;
  4. class my_string {
  5.  private: 
  6. 	char* m_data;
  7. 	unsigned length;
  8.  public:
  9.    my_string(const char* m){
  10.    	cout<<"ctor"<<endl;
  11.    	length = strlen(m);
  12.    	m_data = new char[length];
  13.    	memcpy(m_data, m, length);
  14.    }
  15.    my_string(const my_string& other){
  16.    	cout<<"copy ctor"<<endl;
  17.    	length = other.length;
  18.    	m_data = new char[length];
  19.    	memcpy(m_data, other.m_data, length);
  20.    }
  21.    my_string(my_string&& other) noexcept {
  22.    	cout<<"move ctor"<<endl;
  23.    	length = other.length;
  24.    	m_data = other.m_data;
  25.    	other.length = 0;
  26.    	other.m_data = nullptr;
  27.    }
  28.    ~my_string(){
  29.    	cout<<"dtor"<<endl;
  30.    	 length = 0;
  31.    	 delete m_data;
  32.    }
  33.    char* c_str(){ return m_data;}
  34. };
  35.  
  36. class Entity{
  37. 	private:
  38. 	 my_string str;
  39. 	public: 
  40. 	 Entity(const my_string& s): str(s){}
  41. 	 Entity(my_string&& s):str(std::move(s)) {
  42. 	 	//str = std::move(s);
  43. 	 }
  44.  
  45. 	 ~Entity(){
  46.  
  47. 	 }
  48. 	 void print(){
  49. 	 	cout<< str.c_str()<<endl;
  50. 	 }
  51. };
  52. int main() {
  53. 	//Entity E(my_string("priya"));
  54. 	//my_string p ("priya");
  55. 	//my_string q = p;
  56. 	my_string* p = new my_string("pl");
  57. 	my_string y = std::move("yadav");
  58. //	E.print();
  59. 	// your code goes here
  60. 	return 0;
  61. }
Success #stdin #stdout 0.01s 5508KB
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ctor
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dtor
https://ideone.com/TmcocD
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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