怎样从"字模库"中取出对应得字节？(100分)

static int mirrx=0,mirry=0,qxx=0,qxxqz=0,qxy=0,hzasstyle=0;
void showHZxy(int x,int y,int zx,int zy,int color,char *hzas)
{
	int count,hor,ver,fphz,fpasc,li,flag;
	register int bitx,kk;
	unsigned and,defand;
	unsigned char hzbuf[33],hh,*pp,*hzbufp;
	if(hzasstyle)fphz=open("f://ucdos//hzk16f",0);
	else
 fphz=open("f://ucdos//hzk16",0);
	fpasc=open("f://ucdos//asc16",0);
	for(count=strlen(hzas);count>0;count--,x=x+li*zx+((qxx)? qxxqz:0),y-=16*zy,zy+=qxy)
	{
		if((unsigned)(*hzas)>=0xa1&&(unsigned)(*(hzas+1))>=0xa1)
		{	getHZmode(hzas,hzbuf,fphz);
			hzas++;
			hzas++;
			hzbufp=hzbuf;
			for(kk=0;kk<16;kk++){
				pp=hzbufp++;
				hh=*hzbufp;
				*hzbufp++=*pp;
				*pp=hh;}
			hzbufp=hzbuf;
			if(mirry)
				for(kk=0;kk<16;kk++,kk++){
					and=*((unsigned *)(hzbufp+(30-kk)));
					*((unsigned *)(hzbufp+(30-kk)))=*((unsigned *)(hzbufp+kk));
					*((unsigned *)(hzbufp+kk))=and;}
			count--;
			li=16;
			if(mirrx)defand=0x1;
			else
 defand=0x8000;
			flag=1;
		}
		else
{
			getASCmode(hzas,hzbuf,fpasc);
			hzas++;
			hzbufp=hzbuf;
			if(mirry)
				for(kk=0;kk<16;kk++){
					hh=*(hzbufp+(15-kk));
					*(hzbufp+(15-kk))=*(hzbufp+kk);
					*(hzbufp+kk)=hh;}
			li=8;
			if(mirrx)defand=0x1;
			else
 defand=0x80;
			flag=0;
		}
		for(hor=0;hor<16;hor++){
			for(ver=0;ver<zy;ver++,x-=li*zx,x+=qxx,y++)
					for(kk=0,and=defand;kk<li;kk++){
						for(bitx=0;bitx<zx;bitx++,x++){
							if(flag)if((*(unsigned *)hzbufp)&amp;and)putpixel(x,y,color);
							if(!flag)if((*hzbufp)&amp;(char)and)putpixel(x,y,color);
						}
						if(mirrx)and<<=1;
						else
 and>>=1;
					}
			if(flag)hzbufp++,hzbufp++;
			else
 hzbufp++;
		}
	 }
	close(fphz);
	close(fpasc);
}