First and Last Digit codechef solution in c++

#include <iostream>
using namespace std;

int main() {
    int T;
    cin >> T;
    while (T--) {
        int N;
        cin >> N;
        int first = N % 10;
        while (N >= 10) {
            N /= 10;
        }
        int last = N;
        cout << first + last << endl;
    }
    return 0;
}