代码如下

#include <iostream>using namespace std;int main(){;int a;cin>>a;cout<<a%10<<a/10%10<<a/100;return 0;}

输入n，用数组存各位，输出！ 简简单单 #include <bits/stdc++.h> using namespace std; int main(){ int a[3],n;cin >> n; a[0] = n % 10; a[1] = n % 100 / 10; a[2] = n / 100; cout << a[0] << a[1] << a[2]; }

#include<iostream> using namespace std; int main(){ int a; cin>>a; cout<< a%10<<a/10%10<<a/100<<endl; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c,d; cin>>a; b=a%10; c=a/10%10; d=a/100; cout<<b<<c<<d; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; for(int i=0;i<3;++i){ cout<<a%10; a/=10; } }

#include<bits/stdc++.h> using namespace std; int main(){ int n,a,b,c; cin>>n>>a>>b>>c; a=n%10; b=n/10%10; c=n/100; cout<<a<<b<<c; }