Answer Posted / sachin magdum

Kasi, I am not agreed with you, in your case sal will be initialized before ssn.

Debug this program and see,


class A
{
int i ;
public :
A (int _i)
{
i = _i;
}
};

class B
{
A a;
A b;
A c;

public :
B(int _a, int _b, int _c) : a(_a), c(_c), b(_b)
{}
};

int main(int argc, char* argv[])
{
B b(1,2,3);

return 0;
}

Here the initialization order is first 'a' then 'c' and then 'b' and not a, b, c.

However, if you have base class then the case is little different


class A
{
int i ;
public :
A (int _i)
{
i = _i;
}
};

class B : public A
{
A a;
A b;
A c;

public :
B(int _a, int _b, int _c, int _base) : a(_a), c(_c), b(_b), A(_base)
{}
};

int main(int argc, char* argv[])
{
B b(1,2,3,4);

return 0;
}

In this case first 'A' that is base class of B, then 'a' then 'c' then 'b' will be initialized.

If you have multiple base classes, then they will be initialized in the order of their declaration, and not in the order how they are initialized.

class A
{
int i ;
public :
A (int _i)
{
i = _i;
}
};

class C
{
int i ;
public :
C (int _i)
{
i = _i;
}
};


class B : public A, public C
{
A a;
A b;
A c;

public :
B(int _a, int _b, int _c, int _baseA, int _baseC) : a(_a), C (_baseC), c(_c), b(_b), A(_baseA)
{}
};

int main(int argc, char* argv[])
{
B b(1,2,3,4,5);

return 0;
}

In this case first 'A' then 'C' then 'a' then 'c' and then 'b' will be initialized.

Explain rtti.

1023

---

What are c++ templates used for?

1079

---

Can a built-in function be recursive?

975

---

Explain deep copy and a shallow copy?

987

---

What is the extension of c++?

924

---

Is swift faster than go?

1041

---

Can union be self referenced?

1066

---

Which of the following is not a valid declaration for main() a) int main() b) int main(int argc, char *argv[]) c) They both work

1006

---

Why pointer is used in c++?

1080

---

What is class in c++ with example?

1125

---

Explain class invariant.

988

---

What is math h in c++?

1093

---

What are the uses of typedef in a program?

1026

---

How one would use switch in a program?

1024

---

Explain public, protected, private in c++?

957

---