关于#c++#的问题，请各位专家解答！

#include<stdio.h>
int main()
{
    int n,a,b,c;
    scanf("%d",&n);
    a=n/100;
    b=n/10%10;
    c=n%10;
    printf("%d",c*100+b*10+a);
    return 0;
}