#include<iostream.h>

#include<conio.h>

class M

{

int x,y;

public:

void setxy(int a,int b)

{

x=a;

y=b;

}

friend int sum(M m);

};

int sum(M m)

{

int M::*px;

px=&M::x;

int M::*py;

py=&M::y;

M *pm;

pm=&m;

int s,s1,s2;

s1=m.*px;

s2=pm->*py;

s=s1+s2;

return s;

}

int main()

{

M n;

void (M::*pf)(int,int)=&M::setxy;

(n.*pf)(10,20);

n.setxy(10,20);

cout<<"the sum is"<<sum(n);

M *op;

op=&n;

(op->*pf)(30,40);

cout<<sum(n);

getch();

return 0;

}

#include<conio.h>

class M

{

int x,y;

public:

void setxy(int a,int b)

{

x=a;

y=b;

}

friend int sum(M m);

};

int sum(M m)

{

int M::*px;

px=&M::x;

int M::*py;

py=&M::y;

M *pm;

pm=&m;

int s,s1,s2;

s1=m.*px;

s2=pm->*py;

s=s1+s2;

return s;

}

int main()

{

M n;

void (M::*pf)(int,int)=&M::setxy;

(n.*pf)(10,20);

n.setxy(10,20);

cout<<"the sum is"<<sum(n);

M *op;

op=&n;

(op->*pf)(30,40);

cout<<sum(n);

getch();

return 0;

}

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