HDU--1212大数取模

大数取模问题。题目传送门：HDU1212

#include <iostream>using namespace std;char a[1010];int main(){    int b;    while (cin >> a>> b)    {        int flag = 0;        for (int i = 0; a[i] != '\0'; i++)            flag = ((flag * 10) % b+ (a[i] - '0') %b) % b;        cout << flag << endl;    }    return 0;}