char* removeTrailingZero(char* number){
    int i = strlen(number)-1;
    while (number[i]=='0' && i>0) i--;
    number[i] = '\0';
    return number;
}

std::stringstream myStream;
int completeNumber;
myStream << backwardsNumber;
myStream >> completeNumber;

#include "stdafx.h"
#include <iostream>
#include <ctype.h>
#include <fstream>
#include <string>
using namespace std;
 
int reverseDigit, integer, reverse; 
 
 
int main()
{
 
    string integer;
    int cntr;
    cout <<"Please input an integer: ";
    cin >> integer;
 
    cntr = integer.size();
    cntr--;
 
    cout <<"reverse = ";
    if (integer [0] == '-')
        {
            cout << "-";
        }
    while (cntr > -1)
        {    
            if (integer [cntr] == '-')
                cntr--;
            else 
                cout << (integer[cntr--]);
        }
    cout << endl;
    return 0;

string reversedNumbers;

cout << (integer[cntr--]);

reversedNumbers += integer[/* you know what goes here*/];