assignment error while assigning different class objects

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i have overloaded the assignment operator inside the class b but i am getting compilation error after executing below code snippet : error: cannot convert 'a*' to 'b*' in assignment bobj=aobj; ^ and due to this error it seems to be bobj->showname(); is not also functional as still content of aobj is not copied to bobj and it is still behaving class b's object. I never been able to perform assignment between different kind of objects. I believe it is possible to assign different class of objects Please suggest. code snippet:

#include <iostream>
using namespace std;
class a 
{
int a1;
public:
a( int _a1=0):a1(_a1)
{
}
void showname()
{
cout<<"class name a with value ="<<a1<<endl;    
}

};

class b
{
public:
 const b& operator=(const b& rhs);
private:
a *cobj;    
};
 const b& b::operator=(const b& rhs)
{
a *origobj=cobj;
cobj=new a (*rhs.cobj);
delete origobj;
return *this;
}
int main() {
    a *aobj=new a;
    b *bobj=new b;
    bobj=aobj;//error during assignment 
    bobj->showname();
    return 0;
}

asked 41 secs ago

user2907032

31

assignment error while assigning different class objects