#include<iostream>
#include<string>
using namespace std;
int main()
{
string str;
cin >> str;
int num = 0,weight = 1;
for (int i = 0; i < str.size()-1; i++) {
if (str[i] == '-') continue;
num += (str[i] - '0')*weight;// (s[i]-'0') 注意此处,容易出错
weight++; // (s[i]-'0')将字符转换为数字
}
char number;
if (num % 11 == 10) number = 'X';
else number = num % 11 + '0'; // 将数字转换为字符
if (str[str.size() - 1] == number) cout << "Right" << endl;
else {
str[str.size() - 1] = number;
cout << str << endl;
}
system("pause");
return 0;
}
CCF 201312-2 ISBN号码(满分)
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转载自blog.csdn.net/qq_27538633/article/details/105797237
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