if((g_ucTempbuf[0]==0x44)&&(g_ucTempbuf[1]==0))怎么判断数组的元素是什么啊？只定义数组类型而不给数组赋值，那数组是怎么用的？
void display_type()
{
        unsigned char num;
        write_com(0x1);            //清屏
            write_com(0x80+0x40);    //第二行显示的起始地址   
        for(num=0;num<5;num++)   
        {
            write_data(table9[num]);
        }

        if((g_ucTempbuf[0]==0x44)&&(g_ucTempbuf[1]==0))//Mifare_UltraLight
        {

                for(num=0;num<4;num++)//第一行要显示的11个字符
                {
                    write_data(table4[num]);
            
                }
        }
        else if((g_ucTempbuf[0]==0x04)&&(g_ucTempbuf[1]==0))//Mifare_One(S50)
        {

                for(num=0;num<7;num++)//第一行要显示的11个字符
                {
                    write_data(table5[num]);
            
                }
        }
        else if((g_ucTempbuf[0]==0x02)&&(g_ucTempbuf[1]==0))//Mifare_One(S70)
        {

                for(num=0;num<7;num++)//第一行要显示的11个字符
                {
                    write_data(table6[num]);
            
                }
        }
        else if((g_ucTempbuf[0]==0x08)&&(g_ucTempbuf[1]==0))//Pro(X)
        {

                for(num=0;num<6;num++)//第一行要显示的11个字符
                {
                    write_data(table7[num]);
            
                }
        }
        else if((g_ucTempbuf[0]==0x44)&&(g_ucTempbuf[1]==0x03))//DESFire
        {

                for(num=0;num<7;num++)//第一行要显示的11个字符
                {
                    write_data(table8[num]);
            
                }
        }