#29116: 求救 c++
cindie060806@gmail.com
(c)
學校
:
臺北市立第一女子高級中學
編號 : 180566
來源 : [123.193.99.55]
最後登入時間 ：
2023-10-21 17:32:55
a020. 身分證檢驗
| From: [123.193.65.111] |
發表日期
:
2022-01-30 12:50
#include <iostream>
using namespace std;
int main()
{
char letter, b[11];
int x, S=0, i;
cin >> letter;
for (i=2; i<=10; i++)
cin >> b[i];
if (letter >= 'A' && letter <= 'H')
x = (int)letter - 55;
if (letter >= 'J' && letter <= 'N')
x = (int)letter - 56;
if (letter >= 'P' && letter <= 'Z')
x = (int)letter - 57;
if (letter == 'I')
x = (int)letter - 39;
if (letter == 'O')
x = (int)letter - 44;
b[0] = x/10;
b[1] = x%10;
for (i=2; i<=10; i++)
{S += b[i]*(11-i);
S = S + b[0] + b[1]*9 + b[10];
}
if (S%10 == 0)
cout << "real" << endl;
else
cout << "fake" << endl;
return 0;
}
output都是fake😵💫
#29117: Re:求救 c++
a020. 身分證檢驗
| From: [39.10.69.232] |
發表日期
:
2022-01-30 14:00
#includeusing namespace std;int main(){char letter, b[11];int x, S=0, i;cin >> letter;for (i=2; i<=10; i++)cin >> b[i];if (letter >= 'A' && letter <= 'H')x = (int)letter - 55;if (letter >= 'J' && letter <= 'N')x = (int)letter - 56;if (letter >= 'P' && letter <= 'Z')x = (int)letter - 57;if (letter == 'I')x = (int)letter - 39;if (letter == 'O')x = (int)letter - 44;b[0] = x/10;b[1] = x%10;for (i=2; i<=10; i++){S += b[i]*(11-i);S = S + b[0] + b[1]*9 + b[10];}if (S%10 == 0)cout << "real" << endl;elsecout << "fake" << endl;return 0;}output都是fake😵💫
這......錯的地方有點多啊
1. if (letter >= 'P' && letter <= 'Z')
WXY錯了
2. 你的b是字元陣列，但是你把它當數字了，要先減48才行
3.for (i=2; i<=10; i++)
i<=9
4. S += b[i]*(11-i)
是10-i
5. S = S + b[0] + b[1]*9 + b[10]
只要執行一次就好了，所以移到for迴圈外
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