Peti

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

int main() {
    string R;
    string S;
    bool nijeBroj = false;
    do {
        nijeBroj = false;
        cout << "Upisite R: ";
        cin >> R;
        cout << "Upisite S: ";
        cin >> S;
        for(int i = 0; i < R.length(); ++i) {
            if(!isdigit(R[i]))
                nijeBroj = true;
        }
        for(int i = 0; i < S.length(); ++i) {
            if(!isdigit(S[i]))
                nijeBroj = true;
        }
    }while(nijeBroj);

    int r;
    int s;
    istringstream c1(R);
    c1 >> r;
    istringstream c2(S);
    c2 >> s;

    if(r >= s) {
        cout << r << " " << s;
    } else
        cout << s << " "  << r;
    return 0;
}