c++颠倒个十百千

#include<iostream>

using namespace std;

int main(){

    int a,ge,shi,bai,qian;

    a=9876;

    ge=a%10;

    shi=(a%100)/10;

    bai=(a%1000)/100;

    qian=a/1000

    a=ge*1000+shi*100+bai*10+qian;

    cout<<a<<endl;

}