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c_-_c_operator_overloading:overloading_the_copy_assignment_operator

C - C++ Operator Overloading - Overloading the copy assignment operator

#include <iostream>
#include <cstring>
using std::cout;
using std::endl;
using namespace std;
 
class MyString 
{
public:
  MyString(const char* pText) 
  {
    pString = new char[ strlen(pText) + 1 ];
      std::strcpy(pString, pText);
  }
 
  ~MyString() 
  {
    cout << endl << "Destructor called." << endl;
    delete[] pString;
  }
 
  MyString& operator=(const MyString& String) 
  {
    cout << endl << "calling =." << endl;
    if(this == &String)
      return *this;
 
    delete[] pString;
    pString = new char[ strlen(String.pString) + 1];
 
    // Copy right operand string to left operand
    std::strcpy(this->pString, String.pString);
 
    return *this;
  }
 
 
  char* getString() const{ return pString; }
 
private:
  char* pString;
};
 
 
int main() 
{
  MyString warning("There is a String");
  MyString standard("");
 
  cout << warning.getString();
  cout << standard.getString();
 
  standard = warning;
 
  cout << warning.getString();
  cout << standard.getString();
  cout << endl;
 
  return 0;
}
c_-_c_operator_overloading/overloading_the_copy_assignment_operator.txt · Last modified: 2020/07/15 10:30 by 127.0.0.1

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