how do i reverse a number which starts with zero in cpp?

Question

how do i reverse a number which starts with zero in c++? like 000021 to 120000 reverse a number which starts with zero

#include <iostream>
using namespace std;
int main()
{
    int T;
    cin >> T;
    while (T--) {
        int n, l;
        cin >> n;
        while (n != 0) {
            l = n % 10;
            cout << l;
            n /= 10;
            if (n != 0)
            {
                cout << " ";
            }
        }
        cout << endl;
    }
    return 0;
}

Answer 1

you need to take input number as string.

• reverse the input string.

   string s = "00012";
   string str="";
       for(int i=s.size()-1;i>=0;i--){
             str+=s[i];
       }
   cout<<stoi(str);