reverse digits

[dutchman]

Hi people,

I want to read in positive digits and then I want to reverse that. But, in order to do that I have to convert it into a string. Than reverse that string and than convert it back to digits.
I have to use itoa and atoi.
Here is what I've got:

#include <stdio.h>
#include <stdlib.h>

int main ()
{
  int i;
  int a;
  int c;
  int help;
  char buffer [5];
  
  printf ("Enter numbers: ");
  scanf ("%d",&i);
  itoa(i,buffer,10);
  

  c=atoi(buffer);
  
  printf("%d",......);
  getchar();
  getchar();
}

[cire]

In C++, we might do:

#include <sstream>
#include <iostream>
#include <string>
#include <algorithm>

std::string to_string( unsigned value )
{
    std::ostringstream os ;
    os << value ;
    return os.str() ;
}

int main()
{
    unsigned input ;

    std::cin >> input ;
    std::string s = to_string(input) ;
    std::reverse(s.begin(), s.end()) ;

    std::cout << s << '\n' ;
}

[dutchman]

I don't know how to use the above programming style of c++. But I can't use recursive only iterative.