why this behavious abnormal ?

[vimalankvk80]

#include <iostream>
 
using namespace std;
 
 
class A
{
private:
int a;
int b;
 
public:
 
 
 
A( int i, int j) : a(i), b(j)
 
{
cout << "intitialize a = " << a << endl;
cout << "intitialize b = " << b << endl;
 
}
 
 
 
friend ostream& operator<<(ostream &os, const A &obj)
 
{
 
os << obj.a << obj.b ;
 
return os; // if i forget to return this referance.....
 
}
 
};
 
 
 
int main()
 
{
 
 
A *aobj = new A(5,10);
 
cout<< aobj;
 
cout<<endl;
 
 
 
return 0;
 
}
 

code as shown above...

i am getting :

my o/p : 004800f0

but expected is 510

why ? // i used vc6 IDE

[vimalankvk80]

#include <iostream>

using namespace std;


class A
{
private:
int a;
int b;

public:



A( int i, int j) : a(i), b(j)

{
cout << "intitialize a = " << a << endl;
cout << "intitialize b = " << b << endl;

}



friend ostream& operator<<(ostream &os, const A &obj)

{

os << obj.a << obj.b ;

return os; // if i forget to return this referance.....

}

};



int main()

{


A *aobj = new A(5,10);

cout<< aobj;

cout<<endl;



return 0;

}

code as shown above...

i am getting :

my o/p : 004800f0

but expected is 510

why ? // i used vc6 IDE

i had fixed this problem.....


in two ways...

1. object from stack...


A aobj(5,10);

cout<< aobj;

2. object from heap...

A *aobj = new A(5,10);

cout<< *aobj;

both o/p will be 5 10

[weaknessforcats]

I'm glad you fixed it.

This is a common error:

A *aobj = new A(5,10);
 
cout<< aobj;
 

The address of aobj is displayed. So your fix is correct:

cout << *aobj;
 

It's a little different with the stack object since stack object's address is &aobj. Therefore, cout << aobj will work. To se the address of the stack objct oyuwould need to cout << &aobj.