C++ - Class X{X(){}X(X &obj){} // supose '=' operator is also overloaded for this class. I am not writing

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Class X
{

X(){}
X(X &obj)
{}

// supose '=' operator is also overloaded for this class. I am not writing code for that
}

main()
{

X a;
X b = a;
X c(&a);
X d;
d = a;

}

What is the difference between a, b, c, d objects ?

Total Answers and Comments: 3

Last Update: December 07, 2008 Asked by: smart_coder

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February 06, 2007 08:31:23

Rajesh

RE: Class X{X(){}X(X &obj)

X b a; --calls copy constructor as here new object will be created.X c(a); copy constructord a; normal assignment so operator comes into picture.

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February 20, 2007 03:47:23

swetha

RE: Class X{X(){}X(X &obj)

x a; - calls default constructor

X b a; - calls copy constructor
X c(a); - calls copy constructor
X d; - calls default constructor
d a; - calls overloaded operator.

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December 07, 2008 10:27:25

burraganesh

Member Since: December 2008 Contribution: 20

RE: Class X{X(){}X(X &obj){} // supose '=' operator is also overloaded for this class. I am not writing code for that }main(){X a;X b = a;X c(&a);X d;d = a;}What is the difference between a, b, c, d objects ?

For statements Xb a and X c(a) copy constructor is invoked but with assignment d a operator() is invoked.

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