Question

what could be analogue code for following code snippet

    class A
    {
    };

I have above class, now I create one object pointer for it and one object for it.

    A* a;
    A aobj;

I want an analogue code for if statement below using aobj( A’s object).

    if(a)
    {
    }

Answer 1

Presumably A has a constructor that initializes its members. You could add an

bool IsValid()  

member that just check if members are at default values. Eg

class A {
    int value;
    A() : value(-1) { }
    bool IsValid() { return value!=-1; }
}

if (aobj.IsValid()) {
    ...
}