高中生程式解題系統：身分證檢驗

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題目連結 http://zerojudge.tw/ShowProblem?problemid=a020。

建立一個英文代號的對照表 ：

short encode[] = {
    10, 11, 12, 13, 14, 15, 16, 17, 34,
    18, 19, 20, 21, 22, 35, 23, 24, 25,
    26, 27, 28, 29, 32, 30, 31, 33
};

接著再依照題目說明的規則即可。

程式碼：

	#include <iostream>
	using namespace std;
	int main()
	{
	short encode[] = {
	10, 11, 12, 13, 14, 15, 16, 17, 34,
	18, 19, 20, 21, 22, 35, 23, 24, 25,
	26, 27, 28, 29, 32, 30, 31, 33
	};
	const short SIZE = 8;
	char a;
	int n;
	while( cin >> a >> n)
	{
	int temp = encode[a - 'A'];
	int check = (temp % 10) * 9 + temp / 10;
	check += (n % 10);
	n = n / 10;
	for(int i = 1; i <= SIZE; i++)
	{
	check += (n % 10) * i;
	n = n / 10;
	}
	if( check % 10 == 0 )
	cout << "real";
	else
	cout << "fake";
	cout << endl;
	}
	return 0;
	}

view raw a020.cpp hosted with ❤ by GitHub