//---------------------------------------------------------
// This program converts a numeral representing a non-
// negative integer to an integer type value. It also
// converts a non-negative integer value to a string
// representation (a numeral).
//
// D. Searls
// Asbury College
// Sep. 2006
//---------------------------------------------------------

#include <iostream>
#include <string>
using namespace std;

int main()
{
    string numeral;
    int integer;
    char ch;
    int digit;
    int position;
    
    cout << "Enter a non-negative integer value: ";
    cin >> numeral;
    cout << endl;
    
    // Convert a numeral (a string) to an integer
    
    integer = 0;
    position = 0;
    while(position < (int)numeral.length())
    {
        ch = numeral.at(position);
        digit = int(ch) - int('0');
        integer = 10 * integer + digit;
        position = position + 1;
    }    
    
    cout << "The integer is " << integer << endl;
    
    // Convert an integer to a numeral (a string)
    
    numeral = "";
    do
    {
        digit = integer % 10;
        integer = integer /10;
        ch = char(int('0') + digit);
        numeral = ch + numeral;
    } while (integer > 0);
    
    cout << "The numeral is \"" << numeral << '\"' << endl;

    return 0;
}