Tiêu đề: Hoàng Khánh Toàn Tue Nov 01, 2022 10:24 pm
#include <bits/stdc++.h>
using namespace std; int n; int main() { cout<< " so can soat la : "; cin>>n; int dv, ch, tr; dv= n % 10; n= n/ 10; ch = n % 10; n=n/ 10; tr = n% 10; cout<<" so doi lai duoc la " << (dv*10 + ch ) * 10 + tr; return 0; }