// reverse an integer 12345 -> 54321 using function
#include<iostream>
using namespace std;

long int reverse(long int n);

int main()
{ long int n=0, result=0;

 cout<<"Dose akeraio: ";
 cin>>n;

 result=reverse(n);
 cout<<"Antistrofos akeraios einai: " <<result <<endl;
  system("PAUSE");
  return 0;
}

long int reverse(long int n)
{int temp=0, rev=0;

 while(n!=0)
 {
     temp=n%10;
     rev=(rev*10)+temp;
     n=n/10;
 }

 return rev;
}