下面程序第二行的语句是什么数据类型? #include unsigned char code tab[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; void Delay() { unsigned char i, j; for (i=0;i<255;i++) for (j=0;j<255;j++); } void main() { unsigned char k; while(1) { for(k=0;k<10;k++) { P2 = tab[k]; Delay(); } } }