C++: How would you declare and initialize reference to a data member?
How would you declare and initialize reference to a data member?
Sometimes we may need to declare a data member which is a reference to another data member of the class as shown below:
class A
{
public :
char *p ;
char *&rp ;
} ;
We can't initialize a reference to a data member at the time of declaration. It should be initialized using 'memberwise initialization as shown below.
#include <iostream.h>
class A
{
public :
char *p ;
char *&rp ;
A( ) : rp ( p )
{
p = "" ;
}
A ( char *s ) : rp ( p )
{
p = s ;
}
} ;
void main( )
{
A a ( "abcd" ) ;
cout << a.rp ;
}
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