If we have this code:

class A
{
public:
A() { cout << 1; }
~A() { cout << 2; }
};

class B : public A
{
public:
B() { cout << 3; }
~B() { cout << 4; }
};
And we create an object from class B, what will be the result?

A. Other

B. I don't know

C. 3412


D. 3142


E. 3124


F. 1342


G. 1324


H. 1234

 

If we have this code:

class A
{
public:
A() { cout << 1; }
~A() { cout << 2; }
};

class B : public A
{
public:
B() { cout << 3; }
~B() { cout << 4; }
};
And we create an object from class B, what will be the result?

A. Other

B. I don't know

C. 3412


D. 3142


E. 3124


F. 1342


G. 1324


H. 1234

 

answer anyone?

 

summeranson,

Shouldn't this be posted the the "Programmers Corner" thread?

Ratch

 

It's obviously a homework assignment so this is where it should be.

 

An answer you will not help you in the slightest as you will not know why. It will be far more beneficial for you to do a little reading on contructors, destructors and derived classes

 

Shouldn't this be in the homework section?

 

can you explain to me about this class? does it means class B inherit class A and so it will perform class A first? therefore the answer is 1234?

 

i post it in homework section and there are members telling me to post in programmer corner...

 

can you explain to me about this class? does it means class B inherit class A and so it will perform class A first? therefore the answer is 1234?

This notation

class B : public A

means that class B inherits from class A.

As mentaaal suggested, you should read up on constructors, destructors, and classes derived from other classes. After that, compile and run your code and see what it does. If you still have questions, then ask them here.