贴这个的注册机 (1千字)

#include "stdio.h"
main()
{
unsigned char string[20];
int i,d,x,y,z,m,n;
unsigned long c,e=0,f=0,o=0,p=0;
start:printf("*********CRAP 1.0*********\nThis keygen is made by Pretender\nPlease input your name : ");
gets(string);
d=strlen(string);
for(i=0;i<d;i++)
if(string[i]>='A'&&string[i]<='Z') string[i]+=32;
x=string[0]&1;y=string[d-1]&1;
m=x;n=y;
if(x==0&&y==0) {x=0x3b;y=0x17;z=0x7;}
if(x==0&&y==1) {x=0x3b;y=0x7;z=0x17;}
if(x==1&&y==0) {x=0x17;y=0x3b;z=0x7;}
if(x==1&&y==1) {x=0x17;y=0x7;z=0x3b;}
for(i=0;i<d;i++)
{c=string[i];
e+=c;e+=x;
f+=c*y;
o=c/z;o+=p;o+=(i+1)*z;p=o;}
e*=x;f*=y;o*=x;o*=y;o*=z;
e%=1000000;f%=1000000;o%=1000000;
printf("Your Register code is  : ");
if(m==0&&n==0) printf("%06lu%06lu%06lu",f,o,e);
if(m==0&&n==1) printf("%06lu%06lu%06lu",o,f,e);
if(m==1&&n==0) printf("%06lu%06lu%06lu",o,e,f);
if(m==1&&n==1) printf("%06lu%06lu%06lu",e,o,f);
printf("\n *****************************      ---    ---    ---\n *Welcome to WWW.CRACKNOW.COM*      /      /      / --\n *****************************      ---    ---    --/\n");
}