C++ 1031 查验身份证 (15 分)

原题

https://pintia.cn/problem-sets/994805260223102976/problems/994805290334011392

代码

#include <algorithm>
#include <iostream>
using namespace std;

const int weight[] = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
const char checkCode[] = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
int main(void)
{
    int n;  
    string IDCard;
    cin >> n;
    bool pass = true;//标志n个id都通过
    for (int i = 0; i < n; i++)
    {
        cin>>IDCard;
        bool flag=true;//标志前17个数都为数字
        int sum=0;//注意sum=0放循环里
        for (int j = 0; j < IDCard.length() - 1; j++)
        {
            if (IDCard[j] >= '0' && IDCard[j] <= '9')
            {
                sum += (IDCard[j] - '0') * weight[j];
            }
            else
            {
                cout << IDCard << endl;
                flag=false;pass=false;
                break;
            }
        }
        if (flag&&IDCard[IDCard.length()-1]!= checkCode[sum % 11]){
            cout << IDCard << endl;
            pass=false;
            }
    }
    if(pass) cout<<"All passed";
}