Sicily-ISBN

字符串的简单处理

要注意不要漏了第20行的判断

#include<iostream> 
#include<string>
#include<cstring> 
using namespace std;
int main() {
    string str;
    while(cin >> str) {
        int sum = 0;
        int m = 10;
        int i = 0;
        while(m!=1) {
            if (str[i] != '-') {
                sum += (str[i] - '0')*m;
                m--;
            }
            i++;
        }
        int j = 11 - sum% 11;
        if (j == 11) {
            j = 0;//这里贼坑 
        }
        if (j != 10) {
            cout << str << '-' << j << endl;
        } else {
            cout << str << '-' << 'X' << endl; 
        }
    }
    return 0;
}