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1. What does this program print? ``

cpp
#include <iostream>
using namespace std;

int main() {
    int n = 9080;
    int reversed = 0;
    while (n > 0) {
        reversed = reversed * 10 + n % 10;
        n /= 10;
    }
    cout << reversed << '\n';
}

``

8090908080980

2. What does this program print? ``

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

int main() {
    istringstream in("hello\nwave\nquit\nbye\n");
    string word;
    while (getline(in, word)) {
        if (word == "quit") {
            cout << "Goodbye.\n";
            break;
        }
        cout << "word: " << word.size() << '\n';
    }
    cout << "done\n";
}

``

3. Inside a digit loop, n /= 10; removes the last digit. Write the same step without the shorthand: n = n ___ 10;

Type your answer.

4. When stoi gets text with no number at all, such as "abc", it throws an exception of type ___.

Type your answer.

5. What does sum_digits(-4721) return in the lesson's digit-sum function, and why?

14, because the sign is ignored-14, because the sign is kept1, because the last digit is taken first0, because the loop test n > 0 is false for a negative number

Digits and menus