11173 . 单选题 Puls

下面代码实现两个整数除法,其中被除数为一个“大整数”,用字符串表示,除数是一个小整数,用int表示,则横线处应该填写?

int main(){
    string s;
    int b;
    cin >> s >> b;

    vector<int> a;
    for(char c : s){
        a.push_back(c - '0');
    }

    vector<int> c;
    long long rem = 0;

    for(int i = 0; i < a.size(); i++){
        rem = rem * 10 + a[i];
        int q = rem / b;
        c.push_back(q);
        ______________
    }

    int pos = 0;
    while(pos < c.size() - 1 && c[pos] == 0) pos++;

    for(int i = pos; i < c.size(); i++){
        cout << c[i];
    }

    cout << endl;
    cout << rem << endl;
    return 0;
}