a020. 身分證檢驗 | From: [125.228.237.153] | 發表日期 : 2012-02-14 00:40

#include<iostream>

int number(char n)

{

   int a = 0,b = 0,c = -1,d = 0;

   if(n=='A'||n=='B'||n=='C'||n=='D'||n=='E'||n=='F'||n=='G'||n=='H'||n=='W')

       {a = n-55;d = 1;}

   if(n=='J'||n=='K'||n=='L'||n=='M'||n=='N')

  {a = n-56;d = 1;}

   if(n=='P'||n=='Q'||n=='R'||n=='S'||n=='T'||n=='U'||n=='V'||n=='Z')

  {a = n-57;d = 1;}

   if(n=='O')

  {a = n-44;d = 1;}

   if(n=='I')

  {a = n-39;d = 1;}

   if(n=='X'||n=='Y')

  {a = n-58;d = 1;}

   b=(a%10)*9;

   a/=10;

   if(d==1)

   {  

c=a+b;

     return c;

   }

   if(d==0)

   {

std::cout<<"fake"<<std::endl;

return c;

   }

}

void C(int head,char ID[11],int d = 0)

{

  for(int i=1,j=8;i<9,j>0;i++,j--)

d+=(ID[i]-48)*j;

  d+=(ID[9]-48)+head;

  if(d%10==0&&head!=-1)

std::cout<<"real"<<std::endl;

  if(d%10!=0&&head!=-1)

std::cout<<"fake"<<std::endl;

}

int main()

{

char ID1[11]={0},ID2[11]={0};

while(std::cin>>ID1>>ID2);

{

 C(number(ID1[0]),ID1);

 C(number(ID2[0]),ID2);

}

}

請高手看一下  為甚麼line2?