c++ 将一个整数反转，例如123-＞321

#include <iostream>

using namespace std;
//2、将一个整数反转，例如123->321
int main()
{
    int x;
    int result = 0;
    cin>>x;
    while(x!=0){
        int num = x%10;
        x /= 10;
        result=result * 10 +num;
    }
    cout << result << endl;
    return 0;
}