11阅读以下代码，输入 2476591，输出结果是？
#include<iostream>
usingnamespace std;
intmain(){
longlong n;
cin >> n;
int sum =0;
int len =0;
while(n !=0){
int x = n %10;
len++;
n /=10;
if(len %2!=0) sum += x;
}
cout << sum << endl;
return0;
}
A. 10 B. 12 C. 15 D. 18
