Created
April 12, 2017 17:56
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How Copy Constructor works and Why we need it
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#include <string> | |
#include <iostream> | |
#include <stdlib.h> | |
#include <time.h> | |
using namespace std; | |
class Person | |
{ | |
private: | |
string *name; | |
int age; | |
public: | |
Person() = default; | |
Person(string name, int age) | |
{ | |
cout << " Overloaded constructor was called \n"; | |
this->name = new string(name); | |
this->age = age; | |
} | |
Person(const Person &object) | |
{ | |
cout << " Copy constructor was called \n"; | |
this->name = new string(*object.name); // this will make new instance | |
this->age = object.age; | |
} | |
void UpdateInformation(string name, int age) | |
{ | |
*(this->name) = name; | |
this->age = age; | |
} | |
void Introduce() | |
{ | |
cout << "My name is " << *name << " and my age is " << age << endl; | |
} | |
~Person() | |
{ | |
// delete[] name; we dont need delete it until we overload assignment operator | |
cout << "Object Deleted " << endl; | |
} | |
}; | |
void display(Person object) // this will call copy constructor | |
{ | |
Person sxva("giorgi", 30); | |
object.Introduce(); | |
} | |
int main() { | |
Person Tornike("Tornike", 22); // this will call overload constructor | |
Person Daviti = Tornike; // this will call copy constructor | |
cin.get(); | |
cin.get(); | |
return 0; | |
} |
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