#include<stdio.h>
#include<windows.h>
int main()
{
int killer = ;
for (killer = 'a'; killer <= 'd'; killer++)
{
if ((killer != 'a') + (killer == 'c') + (killer == 'd') + (killer != 'd') == )
{
printf("killer is %c!\n",killer);
}
}
system("pause");
return ;
}