сумма

#include <iostream>
#include <string>

using namespace std;

int main() {
    cout << "Enter numbers ";
    string s1, s2, result="";
    cin >>s1;
    cin >>s2;
    char k;
    if (s1.size() < s2.size())
    {
        swap(s1, s2);
    }
    cout << endl;
    cout << s1 <<endl<< "+" <<endl << s2;
    int numeral = 0;
    int n = s2.size();
    int i;
    for (i = 0; i < n; i++)
    {
        numeral = numeral + (s1[n - 1 - i] - '0') + (s2[n - 1 - i] - '0');
        k = numeral % 10 + '0';
        result = k + result;
        numeral = numeral / 10;
    }
    n = s1.size();
    while (i < n)
    {
        numeral = numeral + (s1[n - 1 - i] - '0');
        k = numeral % 10 + '0';
        result =k+result;
        numeral = numeral / 10;
        i++;
    }
    if (numeral != 0)
    {
        k = numeral % 10 + '0';
        result = k + result;
    }
    cout << result;
    system("pause");
    return 0;
}