#include <iostream>
#include <string>

using namespace std;

int main() {
    int value{0};
    string number;

    cout << "Enter a positive integer: ";
    cin >> value;
    cout << endl;

    int digit;
    int valueHold{value};

    while (value > 0) {
        digit = value % 10;
        value = value / 10;

        number = static_cast<char>(digit + '0') + number;
    }

    // special case of 0
    if (number == "") {
       number = "0";
    }

    cout << valueHold << " = " << number << endl;

    return 0;
}