AcWing每日一题--数字反转

https://www.acwing.com/problem/content/447/

水题。

#include<iostream>
using namespace std;
int main(void){
    int n;
    cin>>n;
    int res=0;
    while(n){
        int t=n%10;
        n/=10;
        res=res*10+t;
    }
    cout<<res;
    return 0;
}