Program Of Call By Address In C++

#include<iostream.h>

#include<conio.h>

         int sum(int *x,int *y);  // Function Delaration

main()

{

clrscr();

int a,b,c;

cout<<"Enter First NUmber=";

cin>>a;

cout<<"Enter Second NUmber=";

cin>>b;

c =  sum(&a,&b);                 // Function CAlling

cout<<"\n NAswer="<<c;

getch();

}

int sum(int *x,int *y)    // Function Define

{

int  z;

z= *x + * y;

return z;

}