ADDREV - Adding Reversed Numbers

Problem Link: http://www.spoj.com/problems/ADDREV/
#include<iostream>
using namespace std;
int reverse(int n){
int r=0;
while (n != 0)
   {
      r = r * 10;
      r= r + n%10;
      n = n/10;
   }
 return r;
}
int main()
{
  int n;
  cin>>n;
  while(n--){
  int a,b;
  cin>>a>>b;
a=reverse(a);
  b=reverse(b);
  cout<<reverse(a+b)<<"\n";
  }
  
  return 0;
}