很怪异的一个问题
#include<stdio.h>int main(void)
{
unsigned char r_18,r_19,r_1a,r_1b,r_1c,r_1d,r_1e,r_1f;
unsigned char r9,ra,rb,rc,r10,r11,r12;
int r9_b,ra_b,rb_b,rc_b,r10_b;
int r18_b,r19_b,r1a_b,r1b_b,r1c_b,r1d_b,r1e_b,r1f_b;
int flag=0,z,w,c;
int r18,r19,r1a,r1b,r1c,r1d,r1e,r1f;
/*for(r18=0x00;(r18<0x100)&&(flag!=1);r18++)
for(r19=0x00;(r19<0x100)&&(flag!=1);r19++)
for(r1a=0x00;(r1a<0x100)&&(flag!=1);r1a++)
for(r1b=0x00;(r1b<0x100)&&(flag!=1);r1b++)
for(r1c=0x00;(r1c<0x100)&&(flag!=1);r1c++)
for(r1d=0x00;(r1d<0x100)&&(flag!=1);r1d++)
for(r1e=0x00;(r1e<0x100)&&(flag!=1);r1e++)
for(r1f=0x00;(r1f<0x100)&&(flag!=1);r1f++)*/
{
r18=0xa3;
r19=0xa0;
r1a=0x4e;
r1b=0x40;
r1c=0xf1;
r1d=0x91;
r1e=0x39;
r1f=0x41;
r_18=(unsigned char)r18;
r_19=(unsigned char)r19;
r_1a=(unsigned char)r1a;
r_1b=(unsigned char)r1b;
r_1c=(unsigned char)r1c;
r_1d=(unsigned char)r1d;
r_1e=(unsigned char)r1e;
r_1f=(unsigned char)r1f;
r9=0xf4;
ra=0x66;
rb=0x6a;
rc=0x9d;
r12=0x0c;
do
{
r11=0x30;
do
{
if(r12!=0x01)
{
r10=((rb&0x08)==0)?0x01:0x10;
if((ra&0x01)==0x01)
r10<<=2;
if((r9&0x01)==0x01)
r10<<=1;
z=0;
if(((rc|0xfd)==0xfd)&&((rc|0xbf)==0xbf))
{
if((r10&0x2e)==0x00)
z=1;
}
if(((rc|0xfd)==0xfd)&&((rc&0x40)!=0x00))
{
if((r10&0x74)==0x00)
z=1;
}
if(((rc&0x02)!=0x00)&&((rc|0xbf)==0xbf))
{
if((r10&0x5c)==0x00)
z=1;
}
if(((rc&0x02)!=0)&&((rc&0x40)!=0))
{
if((r10&0x3a)==0x00)
z=1;
}
w=(z==1)?0x80:0;
r10=((w^ra)^rc)^r1d;
r10_b=((r10&0x80)==0x00)?0:1;
r9_b=((r9&0x80)==0x00)?0:1;
ra_b=((ra&0x80)==0x00)?0:1;
rb_b=((rb&0x80)==0x00)?0:1;
/*rc_b=((rc&0x80)==0)?0:1;*/
r10<<=1;
/*if(rc_b==1)
//r10=r10|0x01;*/
r9<<=1;
if(r10_b==1)
r9=r9|0x01;
ra<<=1;
if(r9_b==1)
ra=ra|0x01;
rb<<=1;
if(ra_b==1)
rb=rb|0x01;
rc<<=1;
if(rb_b==1)
rc=rc|0x01;
//if((r9==0x0f)&&(ra==0x1b)&&(rb==0xed)&&(rc==0x93))
{
// flag=1;
// break;
}
}
r18_b=((r_18&0x80)==0)?0:1;
r19_b=((r_19&0x80)==0)?0:1;
r1a_b=((r_1a&0x80)==0)?0:1;
r1b_b=((r_1b&0x80)==0)?0:1;
r1c_b=((r_1c&0x80)==0)?0:1;
r1d_b=((r_1d&0x80)==0)?0:1;
r1e_b=((r_1e&0x80)==0)?0:1;
r1f_b=((r_1f&0x80)==0)?0:1;
r_1c<<=1;
if(r1b_b==1)
r_1c=r_1c|0x01;
r_1d<<=1;
if(r1c_b==1)
r_1d=r_1d|0x01;
r_1e<<=1;
if(r1d_b==1)
r_1e=r_1e|0x01;
r_1f<<=1;
if(r1e_b==1)
r_1f=r_1f|0x01;
r_18<<=1;
if(r1f_b==1)
r_18=r_18|0x01;
r_19<<=1;
if(r18_b==1)
r_19=r_19|0x01;
r_1a<<=1;
if(r19_b==1)
r_1a=r_1a|0x01;
r_1b<<=1;
if(r1a_b==1)
r_1b=r_1b|0x01;
printf("r9=0x%x ra=0x%x rb=0x%x rc=0x%x\n",r9,ra,rb,rc);
}while((--r11)!=0x00);
//if(flag==1)
//break;
}while((--r12)!=0x00);
}
printf("r9=0x%x ra=0x%x rb=0x%x rc=0x%x",r9,ra,rb,rc);
return 0;
}
如果我两个do_while语句注释掉，第一个结果会不一样，我用编译器是C_free
