区分16个数，正数负数和零 单片机实验

main() { char data *ap = 0x40, *bp = 0x50,*cp = 0x30; char data *a0 = 0x60,*b0 = 0x61,*c0 = 0x62; char a,b,c,i = 0; char data *r; r=0x30; for(i=-8;i<=7;i++) { *r=i; r++; } for(i =0;i <=15;i++,cp++) { if(*cp==0) { (*c0)++; } else if(*cp<0) { *bp = *cp; bp++; (*b0)++; } else if(*cp>0) { *ap = *cp; ap++; (*a0)++; } } while(1); }