Program to reverse an integer number in c++

#include<iostream.h>

#include<conio.h>

void main()

{

int a,d,rev=0;

clrscr();

cout<<"enter the number:";

cin>>a;

while(a>0)

{

d=a%10;

a/=10;

rev=rev*10+d;

}

cout<<"reverse="<<rev;

getch();

}

Output - 

enter the number:876

reverse=678