how to declare structure pointer in within a class

[sharat]

hi all

can any body tell how to declare the structure pointer within a class.

i have written the following program but gettin error.

#include<iostream>

using namespace std;

class A
{

public :
struct sample
{
int a ;
int b ;
};
struct sample var1;
struct sample *ptr = &var1;
};

int main()
{

cout<<"\n struct variable ptr prog\n";
}

i m using fc4,gcc compiler.
i m getting the following error.struct.cpp:15: error: 'a::var1'
cannot appear in a constant-expression

struct.cpp:15: error: `&' cannot appear in a constant-expression
struct.cpp:15: error: ISO C++ forbids initialization of member
'ptr'
struct.cpp:15: error: making 'ptr' static
struct.cpp:15: error: invalid in-class initialization of static data
member of non-integral type 'a::sample*'

can any body tell the solution.
thanx in advance.

 

[sam_cit]

class A
{

public :
struct sample
{
int a ;
int b ;
};
struct sample var1;
struct sample *ptr = &var1;
};

You can initialize in a constructor, basically the executable
statement should be under some function.

 

[Gianni Mariani]

sharat wrote:
....

class A
{

public :
struct sample
{
int a ;
int b ;
};
struct sample var1;
struct sample *ptr = &var1;
};

....

You initialize members in the constructor... like so.

class A
{
public :
struct sample
{
int a ;
int b ;
};
sample var1;
sample *ptr;

A()
: var1(),
ptr( & var1 )
{}
};

 

[Uenal S. Mutlu]

sharat wrote:
...


...

You initialize members in the constructor... like so.

class A
{
public :
struct sample
{
int a ;
int b ;
};
sample var1;
sample *ptr;

A()
: var1(),
ptr( & var1 )
{}
};

What a load a crap.

 

[frame]

What a load a crap.

Hey! don't break wind???...
[NOTE: As long as you post this kind of stuff in this group, I shall
follow up with this advice!]

 

[John Carson]

What a load a crap.

Hey! don't break wind???...
[NOTE: As long as you post this kind of stuff in this group, I shall
follow up with this advice!]

And then the rest of us will have to read it. Don't feed the trolls. Add
them to your blocked senders list.