Write a progarm to swap the values of two variables using pointers in C++?

 #include<iostream.h>

   #include<conio.h>

  int swap(int*,int*);      

  void main()

{

int num1,num2;

clrscr();

cout<<"\nEnter first number:";

cin>>num1;

cout<<"\nEnter second number:";

cin>>num2;

swap(&num1,&num2); 

cout<<"\n\n After swapping numbers are:";

cout<<"NUM1= "<<num1<<endl<<"NUM2= "<<num2;

getch();

}

 int swap(int *a,int *b)   

{

  int temp=*a;

  *a=*b;

  *b=temp;

    }     

OUTPUT:-

Enter first number: 4

Enter second number: 5

After swapping numbers are:

NUM1= 5

NUM2= 4