Below is my C++ code. I was expecting my move ctor to be called here in my main:
Mystring larry2 = "some larry";
main.cpp:
int main()
{
//Mystring no_name;
Mystring larry ("LARRY");
Mystring larry1 {larry}; // deep copy ctor is called
Mystring larry2 = "some larry"; // move ctor should be called but still calling parameterized ctor
}
Mystring.cpp:
Mystring::Mystring()
:str{nullptr} {
cout <<"default ctor called" <<endl;
str = new char[1];
*str = '\0';
}
Mystring::Mystring(const char *s)
:str{nullptr} {
cout << "param ctor called" << endl;
if(s == nullptr) {
// then do same as default ctor;
str = new char[1];
*str = '\0';
}else {
str = new char[std::strlen(s) + 1];
std::strcpy(str, s);
}
}
Mystring::~Mystring() {
cout << "dtor called: " << this->str << endl;
delete []str;
}
//deep copy ctor implementation
Mystring::Mystring(const Mystring &source)
:str{nullptr} {
cout << "deep copy ctor called" <<endl;
str = new char[std::strlen(source.str) + 1];
std::strcpy(str, source.str);
}
//move ctor implementation
Mystring::Mystring(Mystring &&source) noexcept
:str(source.str) {
cout << "move ctor called" << endl;
source.str = nullptr;
}
void Mystring::display() const {
cout << this->str << endl;
}
Mystring.h:
class Mystring {
private:
char *str;
public:
Mystring(); // default ctor
Mystring(const char *source); //parameter ctor
~Mystring();
Mystring(const Mystring &source); //copy ctor
Mystring(Mystring &&source) noexcept; //move ctor
void display() const;
};
I tried multiple sources.
