#include<iostream.h>
#include<conio.h>
int main()
{
int a, b, c;
float sum;
clrscr();
int add(int *, int *, int *);
int (*ptr)(int *, int *, int *);
ptr = &add;
clrscr();
cout<<"Enter three numbers : ";
cin>>a>>b>>c;
sum =(*ptr)(&a, &b, &c);
cout<<"The sum of the entered three numbers is = "<<sum;
getch();
return 0;
}
int add(int *x,int *y,int *z)
{
int s;
s = *x + *y + *z;
return(s);
}