报错 UNRESOLVED EXTERNAL SYMBOL和REFERENCE MADE TO UNRESOLVED EXTERNAL
源程序如下，麻烦大佬看看错在哪里了
#include "reg52.h"
#include "intrins.h"
typedef unsigned char u8;
typedef unsigned int u16;
u8 code smgduan[16]{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
viod main()
{
P0=~smgduan[0];
while(1)
{
}
}
